ResourceScheduler should use renderer notifications instead of MRUCache to track renderers.

content/browser/renderer_host/render_widget_helper.cc

Index: content/browser/renderer_host/render_widget_helper.cc
diff --git a/content/browser/renderer_host/render_widget_helper.cc b/content/browser/renderer_host/render_widget_helper.cc
index 14204a7246ed45d5465abc42227a028b871cf647..1a3231d9d3d4833d9272059edd811e0991fad2b7 100644
--- a/content/browser/renderer_host/render_widget_helper.cc
+++ b/content/browser/renderer_host/render_widget_helper.cc
@@ -127,17 +127,6 @@ RenderWidgetHelper* RenderWidgetHelper::FromProcessHostID(
   return (ci == g_widget_helpers.Get().end())? NULL : ci->second;
 }
 
-void RenderWidgetHelper::CancelResourceRequests(int render_widget_id) {
-  if (render_process_id_ == -1)
-    return;
-
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      base::Bind(&RenderWidgetHelper::OnCancelResourceRequests,
-                 this,
-                 render_widget_id));
-}
-
 void RenderWidgetHelper::SimulateSwapOutACK(
     const ViewMsg_SwapOut_Params& params) {
   BrowserThread::PostTask(
@@ -251,12 +240,6 @@ void RenderWidgetHelper::OnDispatchBackingStoreMsg(
     host->OnMessageReceived(proxy->message());
 }
 
-void RenderWidgetHelper::OnCancelResourceRequests(
-    int render_widget_id) {
-  resource_dispatcher_host_->CancelRequestsForRoute(
-      render_process_id_, render_widget_id);
-}
-
 void RenderWidgetHelper::OnSimulateSwapOutACK(
     const ViewMsg_SwapOut_Params& params) {
   resource_dispatcher_host_->OnSimulateSwapOutACK(params);