Add a NavigationThrottle to the public content/ interface

chrome/browser/chrome_content_browser_client.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 #define CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 269 matching lines @@
   void RegisterInProcessMojoApplications(
       StaticMojoApplicationMap* apps) override;
   void OpenURL(content::BrowserContext* browser_context,
                const content::OpenURLParams& params,
                const base::Callback<void(content::WebContents*)>& callback)
       override;
   content::PresentationServiceDelegate* GetPresentationServiceDelegate(
       content::WebContents* web_contents) override;
 
   void RecordURLMetric(const std::string& metric, const GURL& url) override;
+  ScopedVector<content::NavigationThrottle> GetNavigationThrottles(
+      content::NavigationHandle* handle) override;
 
  private:
   friend class DisableWebRtcEncryptionFlagTest;
 
 #if defined(ENABLE_WEBRTC)
   // Copies disable WebRTC encryption switch depending on the channel.
   static void MaybeCopyDisableWebRtcEncryptionSwitch(
       base::CommandLine* to_command_line,
       const base::CommandLine& from_command_line,
       version_info::Channel channel);
@@ skipping 35 matching lines @@
   std::vector<ChromeContentBrowserClientParts*> extra_parts_;
 
   base::WeakPtrFactory<ChromeContentBrowserClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClient);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_