Add RenderViewHost* to DidStartLoading and DidStopLoading in

chrome/browser/prerender/prerender_tab_helper.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_tab_helper.h"
 
 #include "base/metrics/histogram.h"
 #include "base/string_number_conversions.h"
 #include "base/time.h"
 #include "chrome/browser/prerender/prerender_histograms.h"
@@ skipping 150 matching lines @@
     return;
   url_ = validated_url;
   PrerenderManager* prerender_manager = MaybeGetPrerenderManager();
   if (!prerender_manager)
     return;
   if (prerender_manager->IsWebContentsPrerendering(web_contents()))
     return;
   prerender_manager->RecordNavigation(validated_url);
 }
 
-void PrerenderTabHelper::DidStopLoading() {
+void PrerenderTabHelper::DidStopLoading(
+    content::RenderViewHost* render_view_host) {
   // Compute the PPLT metric and report it in a histogram, if needed.
   // We include pages that are still prerendering and have just finished
   // loading -- PrerenderManager will sort this out and handle it correctly
   // (putting those times into a separate histogram).
   if (!pplt_load_start_.is_null()) {
     double fraction_elapsed_at_swapin = -1.0;
     base::TimeTicks now = base::TimeTicks::Now();
     if (!actual_load_start_.is_null()) {
       double plt = (now - actual_load_start_).InMillisecondsF();
       if (plt > 0.0) {
@@ skipping 63 matching lines @@
     // If we have not finished loading yet, record the actual load start, and
     // rebase the start time to now.
     actual_load_start_ = pplt_load_start_;
     pplt_load_start_ = base::TimeTicks::Now();
     if (pixel_stats_.get())
       pixel_stats_->GetBitmap(PixelStats::BITMAP_SWAP_IN, web_contents());
   }
 }
 
 }  // namespace prerender