Make the renderer-side prerendering code use RenderFrames instead of RenderViews.

content/public/browser/web_contents_observer.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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_
 
 #include "base/process/kill.h"
 #include "base/process/process_handle.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/common/page_transition_types.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "ui/base/window_open_disposition.h"
 
 namespace content {
 
 class NavigationEntry;
+class RenderFrameHost;
 class RenderViewHost;
 class WebContents;
 class WebContentsImpl;
 struct FaviconURL;
 struct FrameNavigateParams;
 struct LoadCommittedDetails;
 struct LoadFromMemoryCacheDetails;
 struct Referrer;
 struct ResourceRedirectDetails;
 struct ResourceRequestDetails;
 
 // An observer API implemented by classes which are interested in various page
 // load events from WebContents.  They also get a chance to filter IPC messages.
 //
 // Since a WebContents can be a delegate to almost arbitrarily many
 // RenderViewHosts, it is important to check in those WebContentsObserver
 // methods which take a RenderViewHost that the event came from the
 // RenderViewHost the observer cares about.
 //
 // Usually, observers should only care about the current RenderViewHost as
 // returned by GetRenderViewHost().
 //
 // TODO(creis, jochen): Hide the fact that there are several RenderViewHosts
 // from the WebContentsObserver API. http://crbug.com/173325
 class CONTENT_EXPORT WebContentsObserver : public IPC::Listener,
                                            public IPC::Sender {
  public:
+  // Called when a RenderFrameHost associated with this WebContents is created.
+  virtual void RenderFrameCreated(RenderFrameHost* render_frame_host) {}
+
+  // Called whenever a RenderFrameHost associated with this WebContents is
+  // deleted.
+  virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) {}
+
   // Only one of the two methods below will be called when a RVH is created for
   // a WebContents, depending on whether it's for an interstitial or not.
   virtual void RenderViewCreated(RenderViewHost* render_view_host) {}
   virtual void RenderViewForInterstitialPageCreated(
       RenderViewHost* render_view_host) {}
 
   // This method is invoked when the RenderView of the current RenderViewHost
   // is ready, e.g. because we recreated it after a crash.
   virtual void RenderViewReady() {}
 
@@ skipping 285 matching lines @@
   void WebContentsImplDestroyed();
 
   WebContentsImpl* web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsObserver);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_