Aura: Show dialog box asking user's permisssion for screen sharing for gtalk

content/public/browser/content_browser_client.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 CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #pragma once
 
 #include <string>
 #include <utility>
@@ skipping 59 matching lines @@
 class SpeechInputManagerDelegate;
 class WebContents;
 class WebContentsView;
 class WebUIControllerFactory;
 struct MainFunctionParams;
 struct ShowDesktopNotificationHostMsgParams;
 
 typedef base::Callback< void(const content::MediaStreamDevices&) >
     MediaResponseCallback;
 
+typedef base::Callback< void(const bool&) > YesNoBoxResponseCallback;
+
 // Embedder API (or SPI) for participating in browser logic, to be implemented
 // by the client of the content browser. See ChromeContentBrowserClient for the
 // principal implementation. The methods are assumed to be called on the UI
 // thread unless otherwise specified. Use this "escape hatch" sparingly, to
 // avoid the embedder interface ballooning and becoming very specific to Chrome.
 // (Often, the call out to the client can happen in a different part of the code
 // that either already has a hook out to the embedder, or calls out to one of
 // the observer interfaces.)
 class ContentBrowserClient {
  public:
@@ skipping 308 matching lines @@
   virtual const wchar_t* GetResourceDllName() = 0;
 #endif
 
 #if defined(USE_NSS)
   // Return a delegate to authenticate and unlock |module|.
   // This is called on a worker thread.
   virtual
       crypto::CryptoModuleBlockingPasswordDelegate* GetCryptoPasswordDelegate(
           const GURL& url) = 0;
 #endif
+
+  // Shows a yes/no box to ask for the user's permission with the specified
+  // message and title. The user's response is sent via |callback|.
+  virtual void ShowYesNoBox(const string16& title,

[Avi (use Gerrit), 2012/03/12 14:45:30]

I'm not that familiar with ppapi; how much UI does it need to do? This seems a
little limiting in the general case.

+                            const string16& message,
+                            YesNoBoxResponseCallback* callback) {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_