Make RenderViewContextMenuViews::GetBrowserAcceleratorProvider() work for GuestViews.

chrome/browser/renderer_context_menu/render_view_context_menu.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 CHROME_BROWSER_RENDERER_CONTEXT_MENU_RENDER_VIEW_CONTEXT_MENU_H_
 #define CHROME_BROWSER_RENDERER_CONTEXT_MENU_RENDER_VIEW_CONTEXT_MENU_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 64 matching lines @@
                                        bool is_checked);
 
   // RenderViewContextMenuBase:
   bool IsCommandIdChecked(int command_id) const override;
   bool IsCommandIdEnabled(int command_id) const override;
   void ExecuteCommand(int command_id, int event_flags) override;
   void AddSpellCheckServiceItem(bool is_checked) override;
 
  protected:
   Profile* GetProfile();
+  Browser* GetBrowser() const;
 
   // Returns a (possibly truncated) version of the current selection text
   // suitable for putting in the title of a menu item.
   base::string16 PrintableSelectionText();
 
   // Helper function to escape "&" as "&&".
   void EscapeAmpersands(base::string16* text);
 
 #if BUILDFLAG(ENABLE_EXTENSIONS)
   extensions::ContextMenuMatcher extension_items_;
@@ skipping 102 matching lines @@
   void ExecProtocolHandlerSettings(int event_flags);
 
   // Writes the specified text/url to the system clipboard
   void WriteURLToClipboard(const GURL& url);
 
   void MediaPlayerActionAt(const gfx::Point& location,
                            const blink::WebMediaPlayerAction& action);
   void PluginActionAt(const gfx::Point& location,
                       const blink::WebPluginAction& action);
 
-  Browser* GetBrowser() const;
-
   // Returns a list of registered ProtocolHandlers that can handle the clicked
   // on URL.
   ProtocolHandlerRegistry::ProtocolHandlerList GetHandlersForLinkUrl();
 
   // The destination URL to use if the user tries to search for or navigate to
   // a text selection.
   GURL selection_navigation_url_;
 
   ui::SimpleMenuModel profile_link_submenu_model_;
   std::vector<base::FilePath> profile_link_paths_;
@@ skipping 24 matching lines @@
 
   // In the case of a MimeHandlerView this will point to the WebContents that
   // embeds the MimeHandlerViewGuest. Otherwise this will be the same as
   // |source_web_contents_|.
   content::WebContents* const embedder_web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewContextMenu);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_CONTEXT_MENU_RENDER_VIEW_CONTEXT_MENU_H_