Remove RenderViewHost parameter from WebContentsObserver::Did{Start|Stop}Loading.

chrome/browser/prerender/prerender_contents.cc

 // 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.
 
 #include "chrome/browser/prerender/prerender_contents.h"
 
 #include <algorithm>
 #include <functional>
 #include <utility>
 
@@ skipping 527 matching lines @@
 void PrerenderContents::RenderFrameCreated(
     content::RenderFrameHost* render_frame_host) {
   // When a new RenderFrame is created for a prerendering WebContents, tell the
   // new RenderFrame it's being used for prerendering before any navigations
   // occur.  Note that this is always triggered before the first navigation, so
   // there's no need to send the message just after the WebContents is created.
   render_frame_host->Send(new PrerenderMsg_SetIsPrerendering(
       render_frame_host->GetRoutingID(), true));
 }
 
-void PrerenderContents::DidStopLoading(
-    content::RenderViewHost* render_view_host) {
+void PrerenderContents::DidStopLoading() {
   has_stopped_loading_ = true;
   NotifyPrerenderStopLoading();
 }
 
 void PrerenderContents::DocumentLoadedInFrame(
     content::RenderFrameHost* render_frame_host) {
   if (!render_frame_host->GetParent())
     NotifyPrerenderDomContentLoaded();
 }
 
@@ skipping 189 matching lines @@
 void PrerenderContents::AddResourceThrottle(
     const base::WeakPtr<PrerenderResourceThrottle>& throttle) {
   resource_throttles_.push_back(throttle);
 }
 
 void PrerenderContents::AddNetworkBytes(int64 bytes) {
   network_bytes_ += bytes;
 }
 
 }  // namespace prerender