src/chrome/browser/net/predictor_tab_helper.cc

   1 // Copyright 2013 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 "chrome/browser/net/predictor_tab_helper.h"
   6
   7 #include "base/command_line.h"
   8 #include "chrome/browser/net/predictor.h"
   9 #include "chrome/browser/profiles/profile.h"
  10 #include "chrome/common/chrome_switches.h"
  11 #include "chrome/common/url_constants.h"
  12
  13 DEFINE_WEB_CONTENTS_USER_DATA_KEY(chrome_browser_net::PredictorTabHelper);
  14
  15 namespace chrome_browser_net {
  16
  17 PredictorTabHelper::PredictorTabHelper(content::WebContents* web_contents)
  18     : content::WebContentsObserver(web_contents) {
  19 }
  20
  21 PredictorTabHelper::~PredictorTabHelper() {
  22 }
  23
  24 void PredictorTabHelper::DidStartNavigationToPendingEntry(
  25     const GURL& url,
  26     content::NavigationController::ReloadType reload_type) {
  27   Profile* profile =
  28       Profile::FromBrowserContext(web_contents()->GetBrowserContext());
  29   chrome_browser_net::Predictor* predictor = profile->GetNetworkPredictor();
  30   if (!predictor)
  31     return;
  32   if (url.SchemeIs(url::kHttpScheme) || url.SchemeIs(url::kHttpsScheme))
  33     predictor->PreconnectUrlAndSubresources(url, GURL());
  34 }
  35
  36 }  // namespace chrome_browser_net