Remove support for old getUserMedia video constraints algorithm.

content/renderer/media/media_stream_video_capturer_source.h

Index: content/renderer/media/media_stream_video_capturer_source.h
diff --git a/content/renderer/media/media_stream_video_capturer_source.h b/content/renderer/media/media_stream_video_capturer_source.h
index df704687cd072cb6eb2d94ac56af12928d8c665f..ee8abe264ecc045794e1e13acf3e2de86dc16355 100644
--- a/content/renderer/media/media_stream_video_capturer_source.h
+++ b/content/renderer/media/media_stream_video_capturer_source.h
@@ -32,10 +32,6 @@ class CONTENT_EXPORT MediaStreamVideoCapturerSource
   MediaStreamVideoCapturerSource(
       const SourceStoppedCallback& stop_callback,
       std::unique_ptr<media::VideoCapturerSource> source);
-  // TODO(guidou): Remove this constructor. http://crbug.com/706408
-  MediaStreamVideoCapturerSource(const SourceStoppedCallback& stop_callback,
-                                 const StreamDeviceInfo& device_info,
-                                 RenderFrame* render_frame);
   MediaStreamVideoCapturerSource(
       const SourceStoppedCallback& stop_callback,
       const StreamDeviceInfo& device_info,
@@ -71,8 +67,6 @@ class CONTENT_EXPORT MediaStreamVideoCapturerSource
   // Method to bind as RunningCallback in VideoCapturerSource::StartCapture().
   void OnRunStateChanged(bool is_running);
 
-  const char* GetPowerLineFrequencyForTesting() const;
-
   // The source that provides video frames.
   const std::unique_ptr<media::VideoCapturerSource> source_;