Almost finish moving context_menu_node_ from RenderViewImpl to RenderFrameImpl.

content/browser/renderer_host/ime_adapter_android.h

Index: content/browser/renderer_host/ime_adapter_android.h
===================================================================
--- content/browser/renderer_host/ime_adapter_android.h	(revision 254898)
+++ content/browser/renderer_host/ime_adapter_android.h	(working copy)
@@ -11,6 +11,7 @@
 
 namespace content {
 
+class RenderFrameHost;
 class RenderWidgetHostImpl;
 class RenderWidgetHostViewAndroid;
 struct NativeWebKeyboardEvent;
@@ -60,6 +61,7 @@
 
  private:
   RenderWidgetHostImpl* GetRenderWidgetHostImpl();
+  RenderFrameHost* GetRenderFrameHost();
 
   RenderWidgetHostViewAndroid* rwhva_;
   JavaObjectWeakGlobalRef java_ime_adapter_;