Remove dead code left over from old-style WebCompositor initialization path.

content/renderer/gpu/compositor_thread.h

Index: content/renderer/gpu/compositor_thread.h
diff --git a/content/renderer/gpu/compositor_thread.h b/content/renderer/gpu/compositor_thread.h
index 15843b8854d8145b081f80aefe729d4b32801b9e..b037f561aae96f0c3d30287b432b31a09ca73d5e 100644
--- a/content/renderer/gpu/compositor_thread.h
+++ b/content/renderer/gpu/compositor_thread.h
@@ -32,24 +32,24 @@ class CompositorThread {
   IPC::ChannelProxy::MessageFilter* GetMessageFilter() const;
 
   // Callable from the main thread or the compositor's thread.
-  void AddCompositor(int routing_id, int compositor_id);
+  void AddInputHandler(int routing_id, int input_handler_id);
 
   webkit_glue::WebThreadImpl* GetWebThread() { return &thread_; }
 
  private:
   // Callback only from the compositor's thread.
-  void RemoveCompositor(int routing_id);
+  void RemoveInputHandler(int routing_id);
 
   // Called from the compositor's thread.
   void HandleInputEvent(int routing_id,
                         const WebKit::WebInputEvent* input_event);
 
-  class CompositorWrapper;
-  friend class CompositorWrapper;
+  class InputHandlerWrapper;
+  friend class InputHandlerWrapper;
 
   typedef std::map<int,  // routing_id
-                   linked_ptr<CompositorWrapper> > CompositorMap;
-  CompositorMap compositors_;
+                   linked_ptr<InputHandlerWrapper> > InputHandlerMap;
+  InputHandlerMap input_handlers_;
 
   webkit_glue::WebThreadImpl thread_;
   scoped_refptr<InputEventFilter> filter_;