src/content/browser/frame_host/render_widget_host_view_guest.cc

   1 // Copyright 2014 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 "base/bind_helpers.h"
   6 #include "base/command_line.h"
   7 #include "base/logging.h"
   8 #include "base/message_loop/message_loop.h"
   9 #include "content/browser/browser_plugin/browser_plugin_guest.h"
  10 #include "content/browser/frame_host/render_widget_host_view_guest.h"
  11 #include "content/browser/renderer_host/render_view_host_impl.h"
  12 #include "content/common/browser_plugin/browser_plugin_messages.h"
  13 #include "content/common/frame_messages.h"
  14 #include "content/common/gpu/gpu_messages.h"
  15 #include "content/common/input/web_touch_event_traits.h"
  16 #include "content/common/view_messages.h"
  17 #include "content/common/webplugin_geometry.h"
  18 #include "content/public/common/content_switches.h"
  19 #include "skia/ext/platform_canvas.h"
  20 #include "third_party/WebKit/public/platform/WebScreenInfo.h"
  21
  22 #if defined(OS_MACOSX)
  23 #import "content/browser/renderer_host/render_widget_host_view_mac_dictionary_helper.h"
  24 #endif
  25
  26 #if defined(USE_AURA)
  27 #include "content/browser/renderer_host/ui_events_helper.h"
  28 #endif
  29
  30 namespace content {
  31
  32 namespace {
  33
  34 #if defined(USE_AURA)
  35 blink::WebGestureEvent CreateFlingCancelEvent(double time_stamp) {
  36   blink::WebGestureEvent gesture_event;
  37   gesture_event.timeStampSeconds = time_stamp;
  38   gesture_event.type = blink::WebGestureEvent::GestureFlingCancel;
  39   gesture_event.sourceDevice = blink::WebGestureDeviceTouchscreen;
  40   return gesture_event;
  41 }
  42 #endif  // defined(USE_AURA)
  43
  44 }  // namespace
  45
  46 RenderWidgetHostViewGuest::RenderWidgetHostViewGuest(
  47     RenderWidgetHost* widget_host,
  48     BrowserPluginGuest* guest,
  49     RenderWidgetHostViewBase* platform_view)
  50     : RenderWidgetHostViewChildFrame(widget_host),
  51       // |guest| is NULL during test.
  52       guest_(guest ? guest->AsWeakPtr() : base::WeakPtr<BrowserPluginGuest>()),
  53       platform_view_(platform_view) {
  54 #if defined(USE_AURA)
  55   gesture_recognizer_.reset(ui::GestureRecognizer::Create());
  56   gesture_recognizer_->AddGestureEventHelper(this);
  57 #endif  // defined(USE_AURA)
  58 }
  59
  60 RenderWidgetHostViewGuest::~RenderWidgetHostViewGuest() {
  61 #if defined(USE_AURA)
  62   gesture_recognizer_->RemoveGestureEventHelper(this);
  63 #endif  // defined(USE_AURA)
  64 }
  65
  66 bool RenderWidgetHostViewGuest::OnMessageReceivedFromEmbedder(
  67     const IPC::Message& message,
  68     RenderWidgetHostImpl* embedder) {
  69   bool handled = true;
  70   IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(RenderWidgetHostViewGuest, message,
  71                                    embedder)
  72     IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_HandleInputEvent,
  73                         OnHandleInputEvent)
  74     IPC_MESSAGE_UNHANDLED(handled = false)
  75   IPC_END_MESSAGE_MAP()
  76   return handled;
  77 }
  78
  79 void RenderWidgetHostViewGuest::WasShown() {
  80   // If the WebContents associated with us showed an interstitial page in the
  81   // beginning, the teardown path might call WasShown() while |host_| is in
  82   // the process of destruction. Avoid calling WasShown below in this case.
  83   // TODO(lazyboy): We shouldn't be showing interstitial pages in guests in the
  84   // first place: http://crbug.com/273089.
  85   //
  86   // |guest_| is NULL during test.
  87   if ((guest_ && guest_->is_in_destruction()) || !host_->is_hidden())
  88     return;
  89   // Make sure the size of this view matches the size of the WebContentsView.
  90   // The two sizes may fall out of sync if we switch RenderWidgetHostViews,
  91   // resize, and then switch page, as is the case with interstitial pages.
  92   // NOTE: |guest_| is NULL in unit tests.
  93   if (guest_)
  94     SetSize(guest_->web_contents()->GetViewBounds().size());
  95   host_->WasShown(ui::LatencyInfo());
  96 }
  97
  98 void RenderWidgetHostViewGuest::WasHidden() {
  99   // |guest_| is NULL during test.
 100   if ((guest_ && guest_->is_in_destruction()) || host_->is_hidden())
 101     return;
 102   host_->WasHidden();
 103 }
 104
 105 void RenderWidgetHostViewGuest::SetSize(const gfx::Size& size) {
 106   size_ = size;
 107   host_->WasResized();
 108 }
 109
 110 void RenderWidgetHostViewGuest::SetBounds(const gfx::Rect& rect) {
 111   SetSize(rect.size());
 112 }
 113
 114 void RenderWidgetHostViewGuest::Focus() {
 115   // InterstitialPageImpl focuses views directly, so we place focus logic here.
 116   // InterstitialPages are not WebContents, and so BrowserPluginGuest does not
 117   // have direct access to the interstitial page's RenderWidgetHost.
 118   if (guest_)
 119     guest_->SetFocus(host_, true);
 120 }
 121
 122 bool RenderWidgetHostViewGuest::HasFocus() const {
 123   if (!guest_)
 124     return false;
 125   return guest_->focused();
 126 }
 127
 128 #if defined(USE_AURA)
 129 void RenderWidgetHostViewGuest::ProcessAckedTouchEvent(
 130     const TouchEventWithLatencyInfo& touch, InputEventAckState ack_result) {
 131   // TODO(fsamuel): Currently we will only take this codepath if the guest has
 132   // requested touch events. A better solution is to always forward touchpresses
 133   // to the embedder process to target a BrowserPlugin, and then route all
 134   // subsequent touch points of that touchdown to the appropriate guest until
 135   // that touch point is released.
 136   ScopedVector<ui::TouchEvent> events;
 137   if (!MakeUITouchEventsFromWebTouchEvents(touch, &events, LOCAL_COORDINATES))
 138     return;
 139
 140   ui::EventResult result = (ack_result ==
 141       INPUT_EVENT_ACK_STATE_CONSUMED) ? ui::ER_HANDLED : ui::ER_UNHANDLED;
 142   for (ScopedVector<ui::TouchEvent>::iterator iter = events.begin(),
 143       end = events.end(); iter != end; ++iter)  {
 144     if (!gesture_recognizer_->ProcessTouchEventPreDispatch(*(*iter), this))
 145       continue;
 146
 147     scoped_ptr<ui::GestureRecognizer::Gestures> gestures;
 148     gestures.reset(gesture_recognizer_->ProcessTouchEventPostDispatch(
 149         *(*iter), result, this));
 150     ProcessGestures(gestures.get());
 151   }
 152 }
 153 #endif
 154
 155 gfx::Rect RenderWidgetHostViewGuest::GetViewBounds() const {
 156   if (!guest_)
 157     return gfx::Rect();
 158
 159   RenderWidgetHostViewBase* rwhv = GetGuestRenderWidgetHostView();
 160   gfx::Rect embedder_bounds;
 161   if (rwhv)
 162     embedder_bounds = rwhv->GetViewBounds();
 163   return gfx::Rect(
 164       guest_->GetScreenCoordinates(embedder_bounds.origin()), size_);
 165 }
 166
 167 void RenderWidgetHostViewGuest::RenderProcessGone(
 168     base::TerminationStatus status,
 169     int error_code) {
 170   platform_view_->RenderProcessGone(status, error_code);
 171   // Destroy the guest view instance only, so we don't end up calling
 172   // platform_view_->Destroy().
 173   DestroyGuestView();
 174 }
 175
 176 void RenderWidgetHostViewGuest::Destroy() {
 177   // The RenderWidgetHost's destruction led here, so don't call it.
 178   DestroyGuestView();
 179
 180   platform_view_->Destroy();
 181 }
 182
 183 gfx::Size RenderWidgetHostViewGuest::GetPhysicalBackingSize() const {
 184   return RenderWidgetHostViewBase::GetPhysicalBackingSize();
 185 }
 186
 187 base::string16 RenderWidgetHostViewGuest::GetSelectedText() const {
 188   return platform_view_->GetSelectedText();
 189 }
 190
 191 void RenderWidgetHostViewGuest::SetTooltipText(
 192     const base::string16& tooltip_text) {
 193   platform_view_->SetTooltipText(tooltip_text);
 194 }
 195
 196 void RenderWidgetHostViewGuest::AcceleratedSurfaceBuffersSwapped(
 197     const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
 198     int gpu_host_id) {
 199   NOTREACHED();
 200 }
 201
 202 void RenderWidgetHostViewGuest::AcceleratedSurfacePostSubBuffer(
 203     const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
 204     int gpu_host_id) {
 205   NOTREACHED();
 206 }
 207
 208 void RenderWidgetHostViewGuest::OnSwapCompositorFrame(
 209     uint32 output_surface_id,
 210     scoped_ptr<cc::CompositorFrame> frame) {
 211   if (!guest_)
 212     return;
 213
 214   last_scroll_offset_ = frame->metadata.root_scroll_offset;
 215   guest_->SwapCompositorFrame(output_surface_id,
 216                               host_->GetProcess()->GetID(),
 217                               host_->GetRoutingID(),
 218                               frame.Pass());
 219 }
 220
 221 bool RenderWidgetHostViewGuest::OnMessageReceived(const IPC::Message& msg) {
 222   return platform_view_->OnMessageReceived(msg);
 223 }
 224
 225 void RenderWidgetHostViewGuest::InitAsChild(
 226     gfx::NativeView parent_view) {
 227   platform_view_->InitAsChild(parent_view);
 228 }
 229
 230 void RenderWidgetHostViewGuest::InitAsPopup(
 231     RenderWidgetHostView* parent_host_view, const gfx::Rect& pos) {
 232   // This should never get called.
 233   NOTREACHED();
 234 }
 235
 236 void RenderWidgetHostViewGuest::InitAsFullscreen(
 237     RenderWidgetHostView* reference_host_view) {
 238   // This should never get called.
 239   NOTREACHED();
 240 }
 241
 242 gfx::NativeView RenderWidgetHostViewGuest::GetNativeView() const {
 243   if (!guest_)
 244     return gfx::NativeView();
 245
 246   RenderWidgetHostView* rwhv = guest_->GetEmbedderRenderWidgetHostView();
 247   if (!rwhv)
 248     return gfx::NativeView();
 249   return rwhv->GetNativeView();
 250 }
 251
 252 gfx::NativeViewId RenderWidgetHostViewGuest::GetNativeViewId() const {
 253   if (!guest_)
 254     return static_cast<gfx::NativeViewId>(NULL);
 255
 256   RenderWidgetHostView* rwhv = guest_->GetEmbedderRenderWidgetHostView();
 257   if (!rwhv)
 258     return static_cast<gfx::NativeViewId>(NULL);
 259   return rwhv->GetNativeViewId();
 260 }
 261
 262 gfx::NativeViewAccessible RenderWidgetHostViewGuest::GetNativeViewAccessible() {
 263   if (!guest_)
 264     return gfx::NativeViewAccessible();
 265
 266   RenderWidgetHostView* rwhv = guest_->GetEmbedderRenderWidgetHostView();
 267   if (!rwhv)
 268     return gfx::NativeViewAccessible();
 269   return rwhv->GetNativeViewAccessible();
 270 }
 271
 272 void RenderWidgetHostViewGuest::MovePluginWindows(
 273     const std::vector<WebPluginGeometry>& moves) {
 274   platform_view_->MovePluginWindows(moves);
 275 }
 276
 277 void RenderWidgetHostViewGuest::UpdateCursor(const WebCursor& cursor) {
 278   // InterstitialPages are not WebContents so we cannot intercept
 279   // ViewHostMsg_SetCursor for interstitial pages in BrowserPluginGuest.
 280   // All guest RenderViewHosts have RenderWidgetHostViewGuests however,
 281   // and so we will always hit this code path.
 282   if (!guest_)
 283     return;
 284   guest_->SendMessageToEmbedder(
 285       new BrowserPluginMsg_SetCursor(guest_->browser_plugin_instance_id(),
 286                                      cursor));
 287
 288 }
 289
 290 void RenderWidgetHostViewGuest::SetIsLoading(bool is_loading) {
 291   platform_view_->SetIsLoading(is_loading);
 292 }
 293
 294 void RenderWidgetHostViewGuest::TextInputStateChanged(
 295     const ViewHostMsg_TextInputState_Params& params) {
 296   if (!guest_)
 297     return;
 298
 299   RenderWidgetHostViewBase* rwhv = GetGuestRenderWidgetHostView();
 300   if (!rwhv)
 301     return;
 302   // Forward the information to embedding RWHV.
 303   rwhv->TextInputStateChanged(params);
 304 }
 305
 306 void RenderWidgetHostViewGuest::ImeCancelComposition() {
 307   if (!guest_)
 308     return;
 309
 310   RenderWidgetHostViewBase* rwhv = GetGuestRenderWidgetHostView();
 311   if (!rwhv)
 312     return;
 313   // Forward the information to embedding RWHV.
 314   rwhv->ImeCancelComposition();
 315 }
 316
 317 #if defined(OS_MACOSX) || defined(USE_AURA)
 318 void RenderWidgetHostViewGuest::ImeCompositionRangeChanged(
 319     const gfx::Range& range,
 320     const std::vector<gfx::Rect>& character_bounds) {
 321   if (!guest_)
 322     return;
 323
 324   RenderWidgetHostViewBase* rwhv = GetGuestRenderWidgetHostView();
 325   if (!rwhv)
 326     return;
 327   std::vector<gfx::Rect> guest_character_bounds;
 328   for (size_t i = 0; i < character_bounds.size(); ++i) {
 329     guest_character_bounds.push_back(gfx::Rect(
 330         guest_->GetScreenCoordinates(character_bounds[i].origin()),
 331         character_bounds[i].size()));
 332   }
 333   // Forward the information to embedding RWHV.
 334   rwhv->ImeCompositionRangeChanged(range, guest_character_bounds);
 335 }
 336 #endif
 337
 338 void RenderWidgetHostViewGuest::SelectionChanged(const base::string16& text,
 339                                                  size_t offset,
 340                                                  const gfx::Range& range) {
 341   platform_view_->SelectionChanged(text, offset, range);
 342 }
 343
 344 void RenderWidgetHostViewGuest::SelectionBoundsChanged(
 345     const ViewHostMsg_SelectionBounds_Params& params) {
 346   if (!guest_)
 347     return;
 348
 349   RenderWidgetHostViewBase* rwhv = GetGuestRenderWidgetHostView();
 350   if (!rwhv)
 351     return;
 352   ViewHostMsg_SelectionBounds_Params guest_params(params);
 353   guest_params.anchor_rect.set_origin(
 354       guest_->GetScreenCoordinates(params.anchor_rect.origin()));
 355   guest_params.focus_rect.set_origin(
 356       guest_->GetScreenCoordinates(params.focus_rect.origin()));
 357   rwhv->SelectionBoundsChanged(guest_params);
 358 }
 359
 360 void RenderWidgetHostViewGuest::CopyFromCompositingSurface(
 361     const gfx::Rect& src_subrect,
 362     const gfx::Size& dst_size,
 363     CopyFromCompositingSurfaceCallback& callback,
 364     const SkColorType color_type) {
 365   CHECK(guest_);
 366   guest_->CopyFromCompositingSurface(src_subrect, dst_size, callback);
 367 }
 368
 369 void RenderWidgetHostViewGuest::SetBackgroundOpaque(bool opaque) {
 370   // Content embedders can toggle opaque backgrounds through this API.
 371   // We plumb the value here so that BrowserPlugin updates its compositing
 372   // state in response to this change. We also want to preserve this flag
 373   // after recovering from a crash so we let BrowserPluginGuest store it.
 374   if (!guest_)
 375     return;
 376   RenderWidgetHostViewBase::SetBackgroundOpaque(opaque);
 377   host_->SetBackgroundOpaque(opaque);
 378   guest_->SetContentsOpaque(opaque);
 379 }
 380
 381 bool RenderWidgetHostViewGuest::LockMouse() {
 382   return platform_view_->LockMouse();
 383 }
 384
 385 void RenderWidgetHostViewGuest::UnlockMouse() {
 386   return platform_view_->UnlockMouse();
 387 }
 388
 389 void RenderWidgetHostViewGuest::GetScreenInfo(blink::WebScreenInfo* results) {
 390   if (!guest_)
 391     return;
 392   RenderWidgetHostViewBase* embedder_view = GetGuestRenderWidgetHostView();
 393   if (embedder_view)
 394     embedder_view->GetScreenInfo(results);
 395 }
 396
 397 #if defined(OS_MACOSX)
 398 void RenderWidgetHostViewGuest::SetActive(bool active) {
 399   platform_view_->SetActive(active);
 400 }
 401
 402 void RenderWidgetHostViewGuest::SetTakesFocusOnlyOnMouseDown(bool flag) {
 403   platform_view_->SetTakesFocusOnlyOnMouseDown(flag);
 404 }
 405
 406 void RenderWidgetHostViewGuest::SetWindowVisibility(bool visible) {
 407   platform_view_->SetWindowVisibility(visible);
 408 }
 409
 410 void RenderWidgetHostViewGuest::WindowFrameChanged() {
 411   platform_view_->WindowFrameChanged();
 412 }
 413
 414 void RenderWidgetHostViewGuest::ShowDefinitionForSelection() {
 415   if (!guest_)
 416     return;
 417
 418   gfx::Point origin;
 419   gfx::Rect guest_bounds = GetViewBounds();
 420   RenderWidgetHostView* rwhv = guest_->GetEmbedderRenderWidgetHostView();
 421   gfx::Rect embedder_bounds;
 422   if (rwhv)
 423     embedder_bounds = rwhv->GetViewBounds();
 424
 425   gfx::Vector2d guest_offset = gfx::Vector2d(
 426       // Horizontal offset of guest from embedder.
 427       guest_bounds.x() - embedder_bounds.x(),
 428       // Vertical offset from guest's top to embedder's bottom edge.
 429       embedder_bounds.bottom() - guest_bounds.y());
 430
 431   RenderWidgetHostViewMacDictionaryHelper helper(platform_view_);
 432   helper.SetTargetView(rwhv);
 433   helper.set_offset(guest_offset);
 434   helper.ShowDefinitionForSelection();
 435 }
 436
 437 bool RenderWidgetHostViewGuest::SupportsSpeech() const {
 438   return platform_view_->SupportsSpeech();
 439 }
 440
 441 void RenderWidgetHostViewGuest::SpeakSelection() {
 442   platform_view_->SpeakSelection();
 443 }
 444
 445 bool RenderWidgetHostViewGuest::IsSpeaking() const {
 446   return platform_view_->IsSpeaking();
 447 }
 448
 449 void RenderWidgetHostViewGuest::StopSpeaking() {
 450   platform_view_->StopSpeaking();
 451 }
 452
 453 bool RenderWidgetHostViewGuest::PostProcessEventForPluginIme(
 454     const NativeWebKeyboardEvent& event) {
 455   return false;
 456 }
 457
 458 #endif  // defined(OS_MACOSX)
 459
 460 #if defined(OS_ANDROID) || defined(TOOLKIT_VIEWS)
 461 void RenderWidgetHostViewGuest::ShowDisambiguationPopup(
 462     const gfx::Rect& rect_pixels,
 463     const SkBitmap& zoomed_bitmap) {
 464 }
 465 #endif  // defined(OS_ANDROID) || defined(TOOLKIT_VIEWS)
 466
 467 #if defined(OS_ANDROID)
 468 void RenderWidgetHostViewGuest::LockCompositingSurface() {
 469 }
 470
 471 void RenderWidgetHostViewGuest::UnlockCompositingSurface() {
 472 }
 473 #endif  // defined(OS_ANDROID)
 474
 475 #if defined(OS_WIN)
 476 void RenderWidgetHostViewGuest::SetParentNativeViewAccessible(
 477     gfx::NativeViewAccessible accessible_parent) {
 478 }
 479
 480 gfx::NativeViewId RenderWidgetHostViewGuest::GetParentForWindowlessPlugin()
 481     const {
 482   return NULL;
 483 }
 484 #endif
 485
 486 void RenderWidgetHostViewGuest::DestroyGuestView() {
 487   host_->SetView(NULL);
 488   host_ = NULL;
 489   base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 490 }
 491
 492 bool RenderWidgetHostViewGuest::CanDispatchToConsumer(
 493     ui::GestureConsumer* consumer) {
 494   CHECK_EQ(static_cast<RenderWidgetHostViewGuest*>(consumer), this);
 495   return true;
 496 }
 497
 498 void RenderWidgetHostViewGuest::DispatchGestureEvent(
 499     ui::GestureEvent* event) {
 500   ForwardGestureEventToRenderer(event);
 501 }
 502
 503 void RenderWidgetHostViewGuest::DispatchCancelTouchEvent(
 504     ui::TouchEvent* event) {
 505   if (!host_)
 506     return;
 507
 508   blink::WebTouchEvent cancel_event;
 509   // TODO(rbyers): This event has no touches in it.  Don't we need to know what
 510   // touches are currently active in order to cancel them all properly?
 511   WebTouchEventTraits::ResetType(blink::WebInputEvent::TouchCancel,
 512                                  event->time_stamp().InSecondsF(),
 513                                  &cancel_event);
 514
 515   host_->ForwardTouchEventWithLatencyInfo(cancel_event, *event->latency());
 516 }
 517
 518 bool RenderWidgetHostViewGuest::ForwardGestureEventToRenderer(
 519     ui::GestureEvent* gesture) {
 520 #if defined(USE_AURA)
 521   if (!host_)
 522     return false;
 523
 524   if ((gesture->type() == ui::ET_GESTURE_PINCH_BEGIN ||
 525       gesture->type() == ui::ET_GESTURE_PINCH_UPDATE ||
 526       gesture->type() == ui::ET_GESTURE_PINCH_END) && !pinch_zoom_enabled_) {
 527     return true;
 528   }
 529
 530   blink::WebGestureEvent web_gesture =
 531       MakeWebGestureEventFromUIEvent(*gesture);
 532   const gfx::Point& client_point = gesture->location();
 533   const gfx::Point& screen_point = gesture->location();
 534
 535   web_gesture.x = client_point.x();
 536   web_gesture.y = client_point.y();
 537   web_gesture.globalX = screen_point.x();
 538   web_gesture.globalY = screen_point.y();
 539
 540   if (web_gesture.type == blink::WebGestureEvent::Undefined)
 541     return false;
 542   if (web_gesture.type == blink::WebGestureEvent::GestureTapDown) {
 543     host_->ForwardGestureEvent(
 544         CreateFlingCancelEvent(gesture->time_stamp().InSecondsF()));
 545   }
 546   host_->ForwardGestureEvent(web_gesture);
 547   return true;
 548 #else
 549   return false;
 550 #endif
 551 }
 552
 553 void RenderWidgetHostViewGuest::ProcessGestures(
 554     ui::GestureRecognizer::Gestures* gestures) {
 555   if ((gestures == NULL) || gestures->empty())
 556     return;
 557   for (ui::GestureRecognizer::Gestures::iterator g_it = gestures->begin();
 558       g_it != gestures->end();
 559       ++g_it) {
 560     ForwardGestureEventToRenderer(*g_it);
 561   }
 562 }
 563
 564 SkColorType RenderWidgetHostViewGuest::PreferredReadbackFormat() {
 565   return kN32_SkColorType;
 566 }
 567
 568 RenderWidgetHostViewBase*
 569 RenderWidgetHostViewGuest::GetGuestRenderWidgetHostView() const {
 570   return static_cast<RenderWidgetHostViewBase*>(
 571       guest_->GetEmbedderRenderWidgetHostView());
 572 }
 573
 574 void RenderWidgetHostViewGuest::OnHandleInputEvent(
 575     RenderWidgetHostImpl* embedder,
 576     int browser_plugin_instance_id,
 577     const gfx::Rect& guest_window_rect,
 578     const blink::WebInputEvent* event) {
 579   if (blink::WebInputEvent::isMouseEventType(event->type)) {
 580     host_->ForwardMouseEvent(
 581         *static_cast<const blink::WebMouseEvent*>(event));
 582     return;
 583   }
 584
 585   if (event->type == blink::WebInputEvent::MouseWheel) {
 586     host_->ForwardWheelEvent(
 587         *static_cast<const blink::WebMouseWheelEvent*>(event));
 588     return;
 589   }
 590
 591   if (blink::WebInputEvent::isKeyboardEventType(event->type)) {
 592     if (!embedder->GetLastKeyboardEvent())
 593       return;
 594     NativeWebKeyboardEvent keyboard_event(*embedder->GetLastKeyboardEvent());
 595     host_->ForwardKeyboardEvent(keyboard_event);
 596     return;
 597   }
 598
 599   if (blink::WebInputEvent::isTouchEventType(event->type)) {
 600     host_->ForwardTouchEventWithLatencyInfo(
 601         *static_cast<const blink::WebTouchEvent*>(event),
 602         ui::LatencyInfo());
 603     return;
 604   }
 605
 606   if (blink::WebInputEvent::isGestureEventType(event->type)) {
 607     host_->ForwardGestureEvent(
 608         *static_cast<const blink::WebGestureEvent*>(event));
 609     return;
 610   }
 611 }
 612
 613 }  // namespace content