Check media permissions through RenderFrameHostDelegate.

content/browser/renderer_host/media/media_stream_ui_proxy.h

 // Copyright 2013 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_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_UI_PROXY_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_UI_PROXY_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 23 matching lines @@
 
   virtual ~MediaStreamUIProxy();
 
   // Requests access for the MediaStream by calling
   // WebContentsDelegate::RequestMediaAccessPermission(). The specified
   // |response_callback| is called when the WebContentsDelegate approves or
   // denies request.
   virtual void RequestAccess(const MediaStreamRequest& request,
                              const ResponseCallback& response_callback);
 
+  // Checks if we have permission to access the microphone or camera. Note that
+  // this does not query the user, it checks any stored settings such as policy
+  // or extension permissions. |type| must be MEDIA_DEVICE_AUDIO_CAPTURE
+  // or MEDIA_DEVICE_VIDEO_CAPTURE.
+  virtual void CheckAccess(const GURL& security_origin,
+                           MediaStreamType type,
+                           int render_process_id,
+                           int render_frame_id,
+                           const base::Callback<void(bool)>& callback);
+
   // Notifies the UI that the MediaStream has been started. Must be called after
   // access has been approved using RequestAccess(). |stop_callback| is be
   // called on the IO thread after the user has requests the stream to be
   // stopped. |window_id_callback| is called on the IO thread with the platform-
   // dependent window ID of the UI.
   virtual void OnStarted(const base::Closure& stop_callback,
                          const WindowIdCallback& window_id_callback);
 
   void SetRenderFrameHostDelegateForTests(RenderFrameHostDelegate* delegate);
 
  protected:
   explicit MediaStreamUIProxy(RenderFrameHostDelegate* test_render_delegate);
 
  private:
   class Core;
   friend class Core;
   friend class FakeMediaStreamUIProxy;
 
   void ProcessAccessRequestResponse(
       const MediaStreamDevices& devices,
       content::MediaStreamRequestResult result);
   void ProcessStopRequestFromUI();
   void OnWindowId(const WindowIdCallback& window_id_callback,
                   gfx::NativeViewId* window_id);
+  void OnCheckedAccess(const base::Callback<void(bool)>& callback,
+                       bool have_access);
 
   scoped_ptr<Core, content::BrowserThread::DeleteOnUIThread> core_;
   ResponseCallback response_callback_;
   base::Closure stop_callback_;
 
   base::WeakPtrFactory<MediaStreamUIProxy> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamUIProxy);
 };
 
 class CONTENT_EXPORT FakeMediaStreamUIProxy : public MediaStreamUIProxy {
  public:
   explicit FakeMediaStreamUIProxy();
   virtual ~FakeMediaStreamUIProxy();
 
   void SetAvailableDevices(const MediaStreamDevices& devices);
+  void SetMicAccess(bool access);
+  void SetCameraAccess(bool access);
 
   // MediaStreamUIProxy overrides.
   virtual void RequestAccess(
       const MediaStreamRequest& request,
       const ResponseCallback& response_callback) OVERRIDE;
+  virtual void CheckAccess(const GURL& security_origin,
+                           MediaStreamType type,
+                           int render_process_id,
+                           int render_frame_id,
+                           const base::Callback<void(bool)>& callback) OVERRIDE;
   virtual void OnStarted(const base::Closure& stop_callback,
                          const WindowIdCallback& window_id_callback) OVERRIDE;
 
  private:
+  // This is used for RequestAccess().
   MediaStreamDevices devices_;
 
+  // These are used for CheckAccess().
+  bool mic_access_;
+  bool camera_access_;
+
   DISALLOW_COPY_AND_ASSIGN(FakeMediaStreamUIProxy);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_UI_PROXY_H_