Fix context menu positioning in MimeHandlerViewGuest.

extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_GUEST_VIEW_MIME_HANDLER_VIEW_MIME_HANDLER_VIEW_GUEST_H_
 #define EXTENSIONS_BROWSER_GUEST_VIEW_MIME_HANDLER_VIEW_MIME_HANDLER_VIEW_GUEST_H_
 
 #include "extensions/browser/extension_function_dispatcher.h"
 #include "extensions/browser/guest_view/guest_view.h"
 
 namespace content {
 class WebContents;
+struct ContextMenuParams;
 }  // namespace content
 
 namespace extensions {
 
 class MimeHandlerViewGuestDelegate;
 
 class MimeHandlerViewGuest : public GuestView<MimeHandlerViewGuest>,
                              public ExtensionFunctionDispatcher::Delegate {
  public:
   static GuestViewBase* Create(content::BrowserContext* browser_context,
@@ skipping 17 matching lines @@
   void DidInitialize() override;
 
   // content::BrowserPluginGuestDelegate implementation
   bool Find(int request_id,
             const base::string16& search_text,
             const blink::WebFindOptions& options,
             bool is_full_page_plugin) override;
 
   // WebContentsDelegate implementation.
   void ContentsZoomChange(bool zoom_in) override;
+  bool HandleContextMenu(const content::ContextMenuParams& params) override;
   void HandleKeyboardEvent(
       content::WebContents* source,
       const content::NativeWebKeyboardEvent& event) override;
   void FindReply(content::WebContents* web_contents,
                  int request_id,
                  int number_of_matches,
                  const gfx::Rect& selection_rect,
                  int active_match_ordinal,
                  bool final_update) override;
 
   // content::WebContentsObserver implementation.
   bool OnMessageReceived(const IPC::Message& message) override;
 
  private:
   MimeHandlerViewGuest(content::BrowserContext* browser_context,
                        int guest_instance_id);
   ~MimeHandlerViewGuest() override;
 
   void OnRequest(const ExtensionHostMsg_Request_Params& params);
 
   scoped_ptr<MimeHandlerViewGuestDelegate> delegate_;
   scoped_ptr<ExtensionFunctionDispatcher> extension_function_dispatcher_;
 
   DISALLOW_COPY_AND_ASSIGN(MimeHandlerViewGuest);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_GUEST_VIEW_MIME_HANDLER_VIEW_MIME_HANDLER_VIEW_GUEST_H_