Per-host V8 histograms.

content/renderer/render_thread_impl.h

Index: content/renderer/render_thread_impl.h
diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index 5ffdda184c02ec26dee41f10d9817c7e46796466..fe335be418a4fc755e4e27ad623eb78ef832e744 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -227,6 +227,13 @@ class CONTENT_EXPORT RenderThreadImpl : public content::RenderThread,
   // first call.
   content::AudioRendererMixerManager* GetAudioRendererMixerManager();
 
+  // Used for updating the information on which is the common host which all
+  // RenderView's share (if any). If there is no common host, this function is

[Charlie Reis, 2012/08/16 16:22:56]

This comment seems relevant for SetCommonHost(), not CommonHost().

[marja, 2012/08/21 15:21:15]

Done.

+  // called with an empty string.
+  static std::string CommonHost();
+
+  static void SetCommonHost(const std::string& host);
+
  private:
   virtual bool OnControlMessageReceived(const IPC::Message& msg) OVERRIDE;