Add "Request app banner" context menu in DevTools

chrome/browser/ui/browser.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_UI_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 655 matching lines @@
       content::WebContents* web_contents) const override;
 
   // Overridden from CoreTabHelperDelegate:
   // Note that the caller is responsible for deleting |old_contents|.
   void SwapTabContents(content::WebContents* old_contents,
                        content::WebContents* new_contents,
                        bool did_start_load,
                        bool did_finish_load) override;
   bool CanReloadContents(content::WebContents* web_contents) const override;
   bool CanSaveContents(content::WebContents* web_contents) const override;
+  bool RequestAppBanner(content::WebContents* web_contents) override;
 
   // Overridden from SearchEngineTabHelperDelegate:
   void ConfirmAddSearchProvider(TemplateURL* template_url,
                                 Profile* profile) override;
 
   // Overridden from SearchTabHelperDelegate:
   void NavigateOnThumbnailClick(const GURL& url,
                                 WindowOpenDisposition disposition,
                                 content::WebContents* source_contents) override;
   void OnWebContentsInstantSupportDisabled(
@@ skipping 308 matching lines @@
   // The following factory is used for chrome update coalescing.
   base::WeakPtrFactory<Browser> chrome_updater_factory_;
 
   // The following factory is used to close the frame at a later time.
   base::WeakPtrFactory<Browser> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_