[Offline Pages] Make prerenderer notify us of network progress.

chrome/browser/prerender/prerender_link_manager.cc

Index: chrome/browser/prerender/prerender_link_manager.cc
diff --git a/chrome/browser/prerender/prerender_link_manager.cc b/chrome/browser/prerender/prerender_link_manager.cc
index c764f4c0772e7f9189f78e4d29256bd27ae0f83b..e54068de7cf91f6c489d271c538c0dcac6c5815c 100644
--- a/chrome/browser/prerender/prerender_link_manager.cc
+++ b/chrome/browser/prerender/prerender_link_manager.cc
@@ -132,6 +132,8 @@ class PrerenderLinkManager::PendingPrerenderManager
     }
   }
 
+  void OnPrerenderNetworkBytesChanged(PrerenderContents* launcher) override {}
+
  private:
   // A pointer to the parent PrerenderLinkManager.
   PrerenderLinkManager* link_manager_;
@@ -531,4 +533,7 @@ void PrerenderLinkManager::OnPrerenderStop(
   StartPrerenders();
 }
 
+void PrerenderLinkManager::OnPrerenderNetworkBytesChanged(
+    PrerenderHandle* prerender_handle) {}
+
 }  // namespace prerender