src/content/renderer/browser_plugin/browser_plugin_bindings.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/renderer/browser_plugin/browser_plugin_bindings.h"
   6
   7 #include <cstdlib>
   8 #include <string>
   9
  10 #include "base/bind.h"
  11 #include "base/message_loop/message_loop.h"
  12 #include "base/strings/string16.h"
  13 #include "base/strings/string_number_conversions.h"
  14 #include "base/strings/string_split.h"
  15 #include "base/strings/utf_string_conversions.h"
  16 #include "content/common/browser_plugin/browser_plugin_constants.h"
  17 #include "content/public/renderer/v8_value_converter.h"
  18 #include "content/renderer/browser_plugin/browser_plugin.h"
  19 #include "third_party/WebKit/public/platform/WebString.h"
  20 #include "third_party/WebKit/public/web/WebBindings.h"
  21 #include "third_party/WebKit/public/web/WebDOMMessageEvent.h"
  22 #include "third_party/WebKit/public/web/WebDocument.h"
  23 #include "third_party/WebKit/public/web/WebElement.h"
  24 #include "third_party/WebKit/public/web/WebFrame.h"
  25 #include "third_party/WebKit/public/web/WebNode.h"
  26 #include "third_party/WebKit/public/web/WebPluginContainer.h"
  27 #include "third_party/WebKit/public/web/WebView.h"
  28 #include "third_party/npapi/bindings/npapi.h"
  29 #include "v8/include/v8.h"
  30
  31 using blink::WebBindings;
  32 using blink::WebElement;
  33 using blink::WebDOMEvent;
  34 using blink::WebDOMMessageEvent;
  35 using blink::WebPluginContainer;
  36 using blink::WebString;
  37
  38 namespace content {
  39
  40 namespace {
  41
  42 BrowserPluginBindings* GetBindings(NPObject* object) {
  43   return static_cast<BrowserPluginBindings::BrowserPluginNPObject*>(object)->
  44       message_channel.get();
  45 }
  46
  47 std::string StringFromNPVariant(const NPVariant& variant) {
  48   if (!NPVARIANT_IS_STRING(variant))
  49     return std::string();
  50   const NPString& np_string = NPVARIANT_TO_STRING(variant);
  51   return std::string(np_string.UTF8Characters, np_string.UTF8Length);
  52 }
  53
  54 // Depending on where the attribute comes from it could be a string, int32,
  55 // or a double. Javascript tends to produce an int32 or a string, but setting
  56 // the value from the developer tools console may also produce a double.
  57 int IntFromNPVariant(const NPVariant& variant) {
  58   int value = 0;
  59   switch (variant.type) {
  60     case NPVariantType_Double:
  61       value = NPVARIANT_TO_DOUBLE(variant);
  62       break;
  63     case NPVariantType_Int32:
  64       value = NPVARIANT_TO_INT32(variant);
  65       break;
  66     case NPVariantType_String:
  67       base::StringToInt(StringFromNPVariant(variant), &value);
  68       break;
  69     default:
  70       break;
  71   }
  72   return value;
  73 }
  74
  75 //------------------------------------------------------------------------------
  76 // Implementations of NPClass functions.  These are here to:
  77 // - Implement src attribute.
  78 //------------------------------------------------------------------------------
  79 NPObject* BrowserPluginBindingsAllocate(NPP npp, NPClass* the_class) {
  80   return new BrowserPluginBindings::BrowserPluginNPObject;
  81 }
  82
  83 void BrowserPluginBindingsDeallocate(NPObject* object) {
  84   BrowserPluginBindings::BrowserPluginNPObject* instance =
  85       static_cast<BrowserPluginBindings::BrowserPluginNPObject*>(object);
  86   delete instance;
  87 }
  88
  89 bool BrowserPluginBindingsHasMethod(NPObject* np_obj, NPIdentifier name) {
  90   if (!np_obj)
  91     return false;
  92
  93   BrowserPluginBindings* bindings = GetBindings(np_obj);
  94   if (!bindings)
  95     return false;
  96
  97   return bindings->HasMethod(name);
  98 }
  99
 100 bool BrowserPluginBindingsInvoke(NPObject* np_obj, NPIdentifier name,
 101                                  const NPVariant* args, uint32 arg_count,
 102                                  NPVariant* result) {
 103   if (!np_obj)
 104     return false;
 105
 106   BrowserPluginBindings* bindings = GetBindings(np_obj);
 107   if (!bindings)
 108     return false;
 109
 110   return bindings->InvokeMethod(name, args, arg_count, result);
 111 }
 112
 113 bool BrowserPluginBindingsInvokeDefault(NPObject* np_obj,
 114                                         const NPVariant* args,
 115                                         uint32 arg_count,
 116                                         NPVariant* result) {
 117   NOTIMPLEMENTED();
 118   return false;
 119 }
 120
 121 bool BrowserPluginBindingsHasProperty(NPObject* np_obj, NPIdentifier name) {
 122   if (!np_obj)
 123     return false;
 124
 125   BrowserPluginBindings* bindings = GetBindings(np_obj);
 126   if (!bindings)
 127     return false;
 128
 129   return bindings->HasProperty(name);
 130 }
 131
 132 bool BrowserPluginBindingsGetProperty(NPObject* np_obj, NPIdentifier name,
 133                                       NPVariant* result) {
 134   if (!np_obj)
 135     return false;
 136
 137   if (!result)
 138     return false;
 139
 140   // All attributes from here on rely on the bindings, so retrieve it once and
 141   // return on failure.
 142   BrowserPluginBindings* bindings = GetBindings(np_obj);
 143   if (!bindings)
 144     return false;
 145
 146   return bindings->GetProperty(name, result);
 147 }
 148
 149 bool BrowserPluginBindingsSetProperty(NPObject* np_obj, NPIdentifier name,
 150                                       const NPVariant* variant) {
 151   if (!np_obj)
 152     return false;
 153   if (!variant)
 154     return false;
 155
 156   // All attributes from here on rely on the bindings, so retrieve it once and
 157   // return on failure.
 158   BrowserPluginBindings* bindings = GetBindings(np_obj);
 159   if (!bindings)
 160     return false;
 161
 162   if (variant->type == NPVariantType_Null)
 163     return bindings->RemoveProperty(np_obj, name);
 164
 165   return bindings->SetProperty(np_obj, name, variant);
 166 }
 167
 168 bool BrowserPluginBindingsEnumerate(NPObject *np_obj, NPIdentifier **value,
 169                                     uint32_t *count) {
 170   NOTIMPLEMENTED();
 171   return true;
 172 }
 173
 174 NPClass browser_plugin_message_class = {
 175   NP_CLASS_STRUCT_VERSION,
 176   &BrowserPluginBindingsAllocate,
 177   &BrowserPluginBindingsDeallocate,
 178   NULL,
 179   &BrowserPluginBindingsHasMethod,
 180   &BrowserPluginBindingsInvoke,
 181   &BrowserPluginBindingsInvokeDefault,
 182   &BrowserPluginBindingsHasProperty,
 183   &BrowserPluginBindingsGetProperty,
 184   &BrowserPluginBindingsSetProperty,
 185   NULL,
 186   &BrowserPluginBindingsEnumerate,
 187 };
 188
 189 }  // namespace
 190
 191 // BrowserPluginMethodBinding --------------------------------------------------
 192
 193 class BrowserPluginMethodBinding {
 194  public:
 195   BrowserPluginMethodBinding(const char name[], uint32 arg_count)
 196       : name_(name),
 197         arg_count_(arg_count) {
 198   }
 199
 200   virtual ~BrowserPluginMethodBinding() {}
 201
 202   bool MatchesName(NPIdentifier name) const {
 203     return WebBindings::getStringIdentifier(name_.c_str()) == name;
 204   }
 205
 206   uint32 arg_count() const { return arg_count_; }
 207
 208   virtual bool Invoke(BrowserPluginBindings* bindings,
 209                       const NPVariant* args,
 210                       NPVariant* result) = 0;
 211
 212  private:
 213   std::string name_;
 214   uint32 arg_count_;
 215
 216   DISALLOW_COPY_AND_ASSIGN(BrowserPluginMethodBinding);
 217 };
 218
 219 class BrowserPluginBindingAttach: public BrowserPluginMethodBinding {
 220  public:
 221   BrowserPluginBindingAttach()
 222       : BrowserPluginMethodBinding(browser_plugin::kMethodInternalAttach, 2) {}
 223
 224   virtual bool Invoke(BrowserPluginBindings* bindings,
 225                       const NPVariant* args,
 226                       NPVariant* result) OVERRIDE {
 227     bool attached = InvokeHelper(bindings, args);
 228     BOOLEAN_TO_NPVARIANT(attached, *result);
 229     return true;
 230   }
 231
 232  private:
 233   bool InvokeHelper(BrowserPluginBindings* bindings, const NPVariant* args) {
 234     if (!bindings->instance()->render_view())
 235       return false;
 236
 237     int instance_id = IntFromNPVariant(args[0]);
 238     if (!instance_id)
 239       return false;
 240
 241     scoped_ptr<V8ValueConverter> converter(V8ValueConverter::create());
 242     v8::Handle<v8::Value> obj(blink::WebBindings::toV8Value(&args[1]));
 243     scoped_ptr<base::Value> value(
 244         converter->FromV8Value(obj, bindings->instance()->render_view()->
 245             GetWebView()->mainFrame()->mainWorldScriptContext()));
 246     if (!value)
 247       return false;
 248
 249     if (!value->IsType(base::Value::TYPE_DICTIONARY))
 250       return false;
 251
 252     scoped_ptr<base::DictionaryValue> extra_params(
 253         static_cast<base::DictionaryValue*>(value.release()));
 254     bindings->instance()->Attach(instance_id, extra_params.Pass());
 255     return true;
 256   }
 257   DISALLOW_COPY_AND_ASSIGN(BrowserPluginBindingAttach);
 258 };
 259
 260 // BrowserPluginPropertyBinding ------------------------------------------------
 261
 262 class BrowserPluginPropertyBinding {
 263  public:
 264   explicit BrowserPluginPropertyBinding(const char name[]) : name_(name) {}
 265   virtual ~BrowserPluginPropertyBinding() {}
 266   const std::string& name() const { return name_; }
 267   bool MatchesName(NPIdentifier name) const {
 268     return WebBindings::getStringIdentifier(name_.c_str()) == name;
 269   }
 270   virtual bool GetProperty(BrowserPluginBindings* bindings,
 271                            NPVariant* result) = 0;
 272   virtual bool SetProperty(BrowserPluginBindings* bindings,
 273                            NPObject* np_obj,
 274                            const NPVariant* variant) = 0;
 275   virtual void RemoveProperty(BrowserPluginBindings* bindings,
 276                               NPObject* np_obj) = 0;
 277   // Updates the DOM Attribute value with the current property value.
 278   void UpdateDOMAttribute(BrowserPluginBindings* bindings,
 279                           std::string new_value) {
 280     bindings->instance()->UpdateDOMAttribute(name(), new_value);
 281   }
 282  private:
 283   std::string name_;
 284
 285   DISALLOW_COPY_AND_ASSIGN(BrowserPluginPropertyBinding);
 286 };
 287
 288 class BrowserPluginPropertyBindingAllowTransparency
 289     : public BrowserPluginPropertyBinding {
 290  public:
 291   BrowserPluginPropertyBindingAllowTransparency()
 292       : BrowserPluginPropertyBinding(
 293           browser_plugin::kAttributeAllowTransparency) {
 294   }
 295   virtual bool GetProperty(BrowserPluginBindings* bindings,
 296                            NPVariant* result) OVERRIDE {
 297     bool allow_transparency =
 298         bindings->instance()->GetAllowTransparencyAttribute();
 299     BOOLEAN_TO_NPVARIANT(allow_transparency, *result);
 300     return true;
 301   }
 302   virtual bool SetProperty(BrowserPluginBindings* bindings,
 303                            NPObject* np_obj,
 304                            const NPVariant* variant) OVERRIDE {
 305     std::string value = StringFromNPVariant(*variant);
 306     if (!bindings->instance()->HasDOMAttribute(name())) {
 307       UpdateDOMAttribute(bindings, value);
 308       bindings->instance()->ParseAllowTransparencyAttribute();
 309     } else {
 310       UpdateDOMAttribute(bindings, value);
 311     }
 312     return true;
 313   }
 314   virtual void RemoveProperty(BrowserPluginBindings* bindings,
 315                               NPObject* np_obj) OVERRIDE {
 316     bindings->instance()->RemoveDOMAttribute(name());
 317     bindings->instance()->ParseAllowTransparencyAttribute();
 318   }
 319  private:
 320   DISALLOW_COPY_AND_ASSIGN(BrowserPluginPropertyBindingAllowTransparency);
 321 };
 322
 323 class BrowserPluginPropertyBindingAutoSize
 324     : public BrowserPluginPropertyBinding {
 325  public:
 326   BrowserPluginPropertyBindingAutoSize()
 327       : BrowserPluginPropertyBinding(browser_plugin::kAttributeAutoSize) {
 328   }
 329   virtual bool GetProperty(BrowserPluginBindings* bindings,
 330                            NPVariant* result) OVERRIDE {
 331     bool auto_size = bindings->instance()->GetAutoSizeAttribute();
 332     BOOLEAN_TO_NPVARIANT(auto_size, *result);
 333     return true;
 334   }
 335   virtual bool SetProperty(BrowserPluginBindings* bindings,
 336                            NPObject* np_obj,
 337                            const NPVariant* variant) OVERRIDE {
 338     std::string value = StringFromNPVariant(*variant);
 339     if (!bindings->instance()->HasDOMAttribute(name())) {
 340       UpdateDOMAttribute(bindings, value);
 341       bindings->instance()->ParseAutoSizeAttribute();
 342     } else {
 343       UpdateDOMAttribute(bindings, value);
 344     }
 345     return true;
 346   }
 347   virtual void RemoveProperty(BrowserPluginBindings* bindings,
 348                               NPObject* np_obj) OVERRIDE {
 349     bindings->instance()->RemoveDOMAttribute(name());
 350     bindings->instance()->ParseAutoSizeAttribute();
 351   }
 352  private:
 353   DISALLOW_COPY_AND_ASSIGN(BrowserPluginPropertyBindingAutoSize);
 354 };
 355
 356 class BrowserPluginPropertyBindingContentWindow
 357     : public BrowserPluginPropertyBinding {
 358  public:
 359   BrowserPluginPropertyBindingContentWindow()
 360       : BrowserPluginPropertyBinding(browser_plugin::kAttributeContentWindow) {
 361   }
 362   virtual bool GetProperty(BrowserPluginBindings* bindings,
 363                            NPVariant* result) OVERRIDE {
 364     NPObject* obj = bindings->instance()->GetContentWindow();
 365     if (obj) {
 366       result->type = NPVariantType_Object;
 367       result->value.objectValue = WebBindings::retainObject(obj);
 368     }
 369     return true;
 370   }
 371   virtual bool SetProperty(BrowserPluginBindings* bindings,
 372                            NPObject* np_obj,
 373                            const NPVariant* variant) OVERRIDE {
 374     return false;
 375   }
 376   virtual void RemoveProperty(BrowserPluginBindings* bindings,
 377                               NPObject* np_obj) OVERRIDE {}
 378  private:
 379   DISALLOW_COPY_AND_ASSIGN(BrowserPluginPropertyBindingContentWindow);
 380 };
 381
 382 class BrowserPluginPropertyBindingMaxHeight
 383     : public BrowserPluginPropertyBinding {
 384  public:
 385   BrowserPluginPropertyBindingMaxHeight()
 386       : BrowserPluginPropertyBinding(browser_plugin::kAttributeMaxHeight) {
 387   }
 388   virtual bool GetProperty(BrowserPluginBindings* bindings,
 389                            NPVariant* result) OVERRIDE {
 390     int max_height = bindings->instance()->GetMaxHeightAttribute();
 391     INT32_TO_NPVARIANT(max_height, *result);
 392     return true;
 393   }
 394   virtual bool SetProperty(BrowserPluginBindings* bindings,
 395                            NPObject* np_obj,
 396                            const NPVariant* variant) OVERRIDE {
 397     int new_value = IntFromNPVariant(*variant);
 398     if (bindings->instance()->GetMaxHeightAttribute() != new_value) {
 399       UpdateDOMAttribute(bindings, base::IntToString(new_value));
 400       bindings->instance()->ParseSizeContraintsChanged();
 401     }
 402     return true;
 403   }
 404   virtual void RemoveProperty(BrowserPluginBindings* bindings,
 405                               NPObject* np_obj) OVERRIDE {
 406     bindings->instance()->RemoveDOMAttribute(name());
 407     bindings->instance()->ParseSizeContraintsChanged();
 408   }
 409  private:
 410   DISALLOW_COPY_AND_ASSIGN(BrowserPluginPropertyBindingMaxHeight);
 411 };
 412
 413 class BrowserPluginPropertyBindingMaxWidth
 414     : public BrowserPluginPropertyBinding {
 415  public:
 416   BrowserPluginPropertyBindingMaxWidth()
 417       : BrowserPluginPropertyBinding(browser_plugin::kAttributeMaxWidth) {
 418   }
 419   virtual bool GetProperty(BrowserPluginBindings* bindings,
 420                            NPVariant* result) OVERRIDE {
 421     int max_width = bindings->instance()->GetMaxWidthAttribute();
 422     INT32_TO_NPVARIANT(max_width, *result);
 423     return true;
 424   }
 425   virtual bool SetProperty(BrowserPluginBindings* bindings,
 426                            NPObject* np_obj,
 427                            const NPVariant* variant) OVERRIDE {
 428     int new_value = IntFromNPVariant(*variant);
 429     if (bindings->instance()->GetMaxWidthAttribute() != new_value) {
 430       UpdateDOMAttribute(bindings, base::IntToString(new_value));
 431       bindings->instance()->ParseSizeContraintsChanged();
 432     }
 433     return true;
 434   }
 435   virtual void RemoveProperty(BrowserPluginBindings* bindings,
 436                               NPObject* np_obj) OVERRIDE {
 437     bindings->instance()->RemoveDOMAttribute(name());
 438     bindings->instance()->ParseSizeContraintsChanged();
 439   }
 440  private:
 441   DISALLOW_COPY_AND_ASSIGN(BrowserPluginPropertyBindingMaxWidth);
 442 };
 443
 444 class BrowserPluginPropertyBindingMinHeight
 445     : public BrowserPluginPropertyBinding {
 446  public:
 447   BrowserPluginPropertyBindingMinHeight()
 448       : BrowserPluginPropertyBinding(browser_plugin::kAttributeMinHeight) {
 449   }
 450   virtual bool GetProperty(BrowserPluginBindings* bindings,
 451                            NPVariant* result) OVERRIDE {
 452     int min_height = bindings->instance()->GetMinHeightAttribute();
 453     INT32_TO_NPVARIANT(min_height, *result);
 454     return true;
 455   }
 456   virtual bool SetProperty(BrowserPluginBindings* bindings,
 457                            NPObject* np_obj,
 458                            const NPVariant* variant) OVERRIDE {
 459     int new_value = IntFromNPVariant(*variant);
 460     if (bindings->instance()->GetMinHeightAttribute() != new_value) {
 461       UpdateDOMAttribute(bindings, base::IntToString(new_value));
 462       bindings->instance()->ParseSizeContraintsChanged();
 463     }
 464     return true;
 465   }
 466   virtual void RemoveProperty(BrowserPluginBindings* bindings,
 467                               NPObject* np_obj) OVERRIDE {
 468     bindings->instance()->RemoveDOMAttribute(name());
 469     bindings->instance()->ParseSizeContraintsChanged();
 470   }
 471  private:
 472   DISALLOW_COPY_AND_ASSIGN(BrowserPluginPropertyBindingMinHeight);
 473 };
 474
 475 class BrowserPluginPropertyBindingMinWidth
 476     : public BrowserPluginPropertyBinding {
 477  public:
 478   BrowserPluginPropertyBindingMinWidth()
 479       : BrowserPluginPropertyBinding(browser_plugin::kAttributeMinWidth) {
 480   }
 481   virtual bool GetProperty(BrowserPluginBindings* bindings,
 482                            NPVariant* result) OVERRIDE {
 483     int min_width = bindings->instance()->GetMinWidthAttribute();
 484     INT32_TO_NPVARIANT(min_width, *result);
 485     return true;
 486   }
 487   virtual bool SetProperty(BrowserPluginBindings* bindings,
 488                            NPObject* np_obj,
 489                            const NPVariant* variant) OVERRIDE {
 490     int new_value = IntFromNPVariant(*variant);
 491     if (bindings->instance()->GetMinWidthAttribute() != new_value) {
 492       UpdateDOMAttribute(bindings, base::IntToString(new_value));
 493       bindings->instance()->ParseSizeContraintsChanged();
 494     }
 495     return true;
 496   }
 497   virtual void RemoveProperty(BrowserPluginBindings* bindings,
 498                               NPObject* np_obj) OVERRIDE {
 499     bindings->instance()->RemoveDOMAttribute(name());
 500     bindings->instance()->ParseSizeContraintsChanged();
 501   }
 502  private:
 503   DISALLOW_COPY_AND_ASSIGN(BrowserPluginPropertyBindingMinWidth);
 504 };
 505
 506
 507 // BrowserPluginBindings ------------------------------------------------------
 508
 509 BrowserPluginBindings::BrowserPluginNPObject::BrowserPluginNPObject() {
 510 }
 511
 512 BrowserPluginBindings::BrowserPluginNPObject::~BrowserPluginNPObject() {
 513 }
 514
 515 BrowserPluginBindings::BrowserPluginBindings(BrowserPlugin* instance)
 516     : instance_(instance),
 517       np_object_(NULL),
 518       weak_ptr_factory_(this) {
 519   NPObject* obj =
 520       WebBindings::createObject(instance->pluginNPP(),
 521                                 &browser_plugin_message_class);
 522   np_object_ = static_cast<BrowserPluginBindings::BrowserPluginNPObject*>(obj);
 523   np_object_->message_channel = weak_ptr_factory_.GetWeakPtr();
 524
 525   method_bindings_.push_back(new BrowserPluginBindingAttach);
 526
 527   property_bindings_.push_back(
 528       new BrowserPluginPropertyBindingAllowTransparency);
 529   property_bindings_.push_back(new BrowserPluginPropertyBindingAutoSize);
 530   property_bindings_.push_back(new BrowserPluginPropertyBindingContentWindow);
 531   property_bindings_.push_back(new BrowserPluginPropertyBindingMaxHeight);
 532   property_bindings_.push_back(new BrowserPluginPropertyBindingMaxWidth);
 533   property_bindings_.push_back(new BrowserPluginPropertyBindingMinHeight);
 534   property_bindings_.push_back(new BrowserPluginPropertyBindingMinWidth);
 535 }
 536
 537 BrowserPluginBindings::~BrowserPluginBindings() {
 538   WebBindings::releaseObject(np_object_);
 539 }
 540
 541 bool BrowserPluginBindings::HasMethod(NPIdentifier name) const {
 542   for (BindingList::const_iterator iter = method_bindings_.begin();
 543        iter != method_bindings_.end();
 544        ++iter) {
 545     if ((*iter)->MatchesName(name))
 546       return true;
 547   }
 548   return false;
 549 }
 550
 551 bool BrowserPluginBindings::InvokeMethod(NPIdentifier name,
 552                                          const NPVariant* args,
 553                                          uint32 arg_count,
 554                                          NPVariant* result) {
 555   for (BindingList::iterator iter = method_bindings_.begin();
 556        iter != method_bindings_.end();
 557        ++iter) {
 558     if ((*iter)->MatchesName(name) && (*iter)->arg_count() == arg_count)
 559       return (*iter)->Invoke(this, args, result);
 560   }
 561   return false;
 562 }
 563
 564 bool BrowserPluginBindings::HasProperty(NPIdentifier name) const {
 565   for (PropertyBindingList::const_iterator iter = property_bindings_.begin();
 566        iter != property_bindings_.end();
 567        ++iter) {
 568     if ((*iter)->MatchesName(name))
 569       return true;
 570   }
 571   return false;
 572 }
 573
 574 bool BrowserPluginBindings::SetProperty(NPObject* np_obj,
 575                                         NPIdentifier name,
 576                                         const NPVariant* variant) {
 577   for (PropertyBindingList::iterator iter = property_bindings_.begin();
 578        iter != property_bindings_.end();
 579        ++iter) {
 580     if ((*iter)->MatchesName(name)) {
 581       if ((*iter)->SetProperty(this, np_obj, variant)) {
 582         return true;
 583       }
 584       break;
 585     }
 586   }
 587   return false;
 588 }
 589
 590 bool BrowserPluginBindings::RemoveProperty(NPObject* np_obj,
 591                                            NPIdentifier name) {
 592   for (PropertyBindingList::iterator iter = property_bindings_.begin();
 593        iter != property_bindings_.end();
 594        ++iter) {
 595     if ((*iter)->MatchesName(name)) {
 596       (*iter)->RemoveProperty(this, np_obj);
 597       return true;
 598     }
 599   }
 600   return false;
 601 }
 602
 603 bool BrowserPluginBindings::GetProperty(NPIdentifier name, NPVariant* result) {
 604   for (PropertyBindingList::iterator iter = property_bindings_.begin();
 605        iter != property_bindings_.end();
 606        ++iter) {
 607     if ((*iter)->MatchesName(name))
 608       return (*iter)->GetProperty(this, result);
 609   }
 610   return false;
 611 }
 612
 613 }  // namespace content