Remove WebContentsDelegate::ExecuteContextMenuCommand since it's not called by content. Since it's …

chrome/browser/external_tab/external_tab_container.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_EXTERNAL_TAB_EXTERNAL_TAB_CONTAINER_H_
 #define CHROME_BROWSER_EXTERNAL_TAB_EXTERNAL_TAB_CONTAINER_H_
 
 #include <windows.h>
 
 #include "base/memory/ref_counted.h"
@@ skipping 71 matching lines @@
   virtual content::WebContents* GetWebContents() const = 0;
 
   virtual TabContents* GetTabContents() = 0;
 
   // This is a wrapper for GetNativeView from ExternalTabContainerWin.
   virtual gfx::NativeView GetExternalTabNativeView() const = 0;
 
   virtual void SetTabHandle(int handle) = 0;
   virtual int GetTabHandle() const = 0;
 
+  // Returns true if the context menu command was handled
+  virtual bool ExecuteContextMenuCommand(int command) = 0;
+
  protected:
   virtual ~ExternalTabContainer() {}
 
  private:
   friend class base::RefCounted<ExternalTabContainer>;
 };
 
 #endif  // CHROME_BROWSER_EXTERNAL_TAB_EXTERNAL_TAB_CONTAINER_H_