Start moving context menu code to RenderFrame.

chrome/browser/ui/gtk/tab_contents/chrome_web_contents_view_delegate_gtk.cc

Index: chrome/browser/ui/gtk/tab_contents/chrome_web_contents_view_delegate_gtk.cc
===================================================================
--- chrome/browser/ui/gtk/tab_contents/chrome_web_contents_view_delegate_gtk.cc	(revision 247964)
+++ chrome/browser/ui/gtk/tab_contents/chrome_web_contents_view_delegate_gtk.cc	(working copy)
@@ -128,6 +128,7 @@
 }
 
 void ChromeWebContentsViewDelegateGtk::ShowContextMenu(
+    content::RenderFrameHost* render_frame_host,
     const content::ContextMenuParams& params) {
   // Find out the RenderWidgetHostView that corresponds to the render widget on
   // which this context menu is showed, so that we can retrieve the last mouse
@@ -149,7 +150,7 @@
   }
 
   context_menu_.reset(
-      new RenderViewContextMenuGtk(web_contents_, params, view));
+      new RenderViewContextMenuGtk(render_frame_host, params, view));
   context_menu_->Init();
 
   // Don't show empty menus.