[Extensions] Kill off ExtensionMsg_AddMessageToConsole

extensions/renderer/extension_frame_helper.h

Index: extensions/renderer/extension_frame_helper.h
diff --git a/extensions/renderer/extension_frame_helper.h b/extensions/renderer/extension_frame_helper.h
index 67f793ecd49a00276653412ebc7892dea197eabc..01a3627608488b4b53ddca9edfc0fadbce9198cb 100644
--- a/extensions/renderer/extension_frame_helper.h
+++ b/extensions/renderer/extension_frame_helper.h
@@ -53,6 +53,11 @@ class ExtensionFrameHelper
   // deleted.
   static bool IsContextForEventPage(const ScriptContext* context);
 
+  // Returns the RenderFrame for the given |context|, or null if one cannot be
+  // found.
+  static content::RenderFrame* RenderFrameForContext(
+      const ScriptContext* context);
+
   ViewType view_type() const { return view_type_; }
   int tab_id() const { return tab_id_; }
   int browser_window_id() const { return browser_window_id_; }
@@ -69,8 +74,6 @@ class ExtensionFrameHelper
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // IPC handlers.
-  void OnAddMessageToConsole(content::ConsoleMessageLevel level,
-                             const std::string& message);
   void OnExtensionDispatchOnConnect(
       int target_port_id,
       const std::string& channel_name,