Report if video capturing meets output protection requirement.

chrome/browser/media/media_capture_devices_dispatcher.h

Index: chrome/browser/media/media_capture_devices_dispatcher.h
diff --git a/chrome/browser/media/media_capture_devices_dispatcher.h b/chrome/browser/media/media_capture_devices_dispatcher.h
index 306025aafe04e72a6a5068a2994a18e25be86745..6d2bcd8bcec8a97473d2cb737574ae5a8740a441 100644
--- a/chrome/browser/media/media_capture_devices_dispatcher.h
+++ b/chrome/browser/media/media_capture_devices_dispatcher.h
@@ -137,13 +137,26 @@ class MediaCaptureDevicesDispatcher : public content::MediaObserver {
                                   content::MediaRequestState state) override;
   void OnCreatingAudioStream(int render_process_id,
                              int render_frame_id) override;
+  void OnSetCapturingLinkSecured(int render_process_id,
+                                 int render_frame_id,
+                                 int page_request_id,
+                                 content::MediaStreamType stream_type,
+                                 bool is_secure) override;
 
   scoped_refptr<MediaStreamCaptureIndicator> GetMediaStreamCaptureIndicator();
 
   DesktopStreamsRegistry* GetDesktopStreamsRegistry();
 
+  // TODO(xjz): remove this after output protection changes to use
+  // |IsCaptureInProgress()| for checking.
   bool IsDesktopCaptureInProgress();
 
+  // Check if any capture is in process, and return if it has secure link in
+  // |is_link_secure|.

[xhwang, 2016/04/12 22:18:50]

We are more interested in whether all links are secure, rather than whether "it
has secure link".

[xjz, 2016/04/12 22:29:08]

Yes. |is_link_secure| is true only when all links connected with this content
are secure. The comment is not accurate. I Will modify it in the next patch.

+  bool IsCaptureInProgress(int render_process_id,
+                           int render_frame_id,
+                           bool* is_link_secure);

[xhwang, 2016/04/12 22:18:49]

Does this cover all capturing cases, e.g. desktop/screen/tab?

[xjz, 2016/04/12 22:29:07]

Yes.

+
   // Only for testing.
   void SetTestAudioCaptureDevices(const content::MediaStreamDevices& devices);
   void SetTestVideoCaptureDevices(const content::MediaStreamDevices& devices);
@@ -166,6 +179,11 @@ class MediaCaptureDevicesDispatcher : public content::MediaObserver {
       content::MediaRequestState state);
   void OnCreatingAudioStreamOnUIThread(int render_process_id,
                                        int render_frame_id);
+  void UpdateCapturingLinkSecured(int render_process_id,
+                                  int render_frame_id,
+                                  int page_request_id,
+                                  content::MediaStreamType stream_type,
+                                  bool is_secure);
 
   // Only for testing, a list of cached audio capture devices.
   content::MediaStreamDevices test_audio_devices_;