Report if video capturing meets output protection requirement.

content/renderer/media/media_stream_video_capturer_source.cc

Index: content/renderer/media/media_stream_video_capturer_source.cc
diff --git a/content/renderer/media/media_stream_video_capturer_source.cc b/content/renderer/media/media_stream_video_capturer_source.cc
index b080ec826df549babe74356c95e481e190ab809c..0a29d2964c9b8f621e785879a041c906e5860248 100644
--- a/content/renderer/media/media_stream_video_capturer_source.cc
+++ b/content/renderer/media/media_stream_video_capturer_source.cc
@@ -11,6 +11,7 @@
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
+#include "content/common/media/media_stream_messages.h"
 #include "content/public/common/media_stream_request.h"
 #include "content/renderer/media/media_stream_constraints_util.h"
 #include "content/renderer/media/video_capture_impl_manager.h"
@@ -318,7 +319,6 @@ void LocalVideoCapturerSource::RequestRefreshFrame() {
   manager_->RequestRefreshFrame(session_id_);
 }
 
-
 void LocalVideoCapturerSource::StopCapture() {
   DVLOG(3) << __FUNCTION__;
   DCHECK(thread_checker_.CalledOnValidThread());
@@ -393,14 +393,16 @@ void LocalVideoCapturerSource::OnDeviceSupportedFormatsEnumerated(
 MediaStreamVideoCapturerSource::MediaStreamVideoCapturerSource(
     const SourceStoppedCallback& stop_callback,
     std::unique_ptr<media::VideoCapturerSource> source)
-    : source_(std::move(source)) {
+    : source_(std::move(source)), render_frame_(nullptr) {
   SetStopCallback(stop_callback);
 }
 
 MediaStreamVideoCapturerSource::MediaStreamVideoCapturerSource(
     const SourceStoppedCallback& stop_callback,
-    const StreamDeviceInfo& device_info)
-    : source_(new LocalVideoCapturerSource(device_info)) {
+    const StreamDeviceInfo& device_info,
+    RenderFrame* render_frame)
+    : source_(new LocalVideoCapturerSource(device_info)),
+      render_frame_(render_frame) {
   SetStopCallback(stop_callback);
   SetDeviceInfo(device_info);
 }
@@ -412,6 +414,13 @@ void MediaStreamVideoCapturerSource::RequestRefreshFrame() {
   source_->RequestRefreshFrame();
 }
 
+void MediaStreamVideoCapturerSource::SetCapturingLinkSecured(bool is_secure) {
+  if (render_frame_) {

[miu, 2016/05/06 18:56:22]

If this class extends RenderFrameObserver, all the code in this method becomes:

  Send(new MediaStreamHostMsg_...);

(Since RenderFrameObserver provides a Send() method that null-checks the
RenderFrame for you.)

[xjz, 2016/05/06 22:08:45]

Done.

+    render_frame_->Send(new MediaStreamHostMsg_SetCapturingLinkSecured(
+        device_info().session_id, device_info().device.type, is_secure));
+  }
+}
+
 void MediaStreamVideoCapturerSource::GetCurrentSupportedFormats(
     int max_requested_width,
     int max_requested_height,