Cleanup blink:: prefix usage in Source/core/modules/[mediasource/*.cpp to websockets/*.cpp]

Source/modules/mediasource/HTMLVideoElementMediaSource.cpp

Index: Source/modules/mediasource/HTMLVideoElementMediaSource.cpp
diff --git a/Source/modules/mediasource/HTMLVideoElementMediaSource.cpp b/Source/modules/mediasource/HTMLVideoElementMediaSource.cpp
index 2e087de8c2f04163461ed12bda44fa9e4fe8127a..7323cceffd20659583571bcb1da44f9085d42e3f 100644
--- a/Source/modules/mediasource/HTMLVideoElementMediaSource.cpp
+++ b/Source/modules/mediasource/HTMLVideoElementMediaSource.cpp
@@ -45,7 +45,7 @@ VideoPlaybackQuality* HTMLVideoElementMediaSource::getVideoPlaybackQuality(HTMLV
     unsigned total = 0;
     unsigned dropped = 0;
     unsigned corrupted = 0;
-    blink::WebMediaPlayer* webMediaPlayer = videoElement.webMediaPlayer();
+    WebMediaPlayer* webMediaPlayer = videoElement.webMediaPlayer();
     if (webMediaPlayer) {
         total = webMediaPlayer->decodedFrameCount();
         dropped = webMediaPlayer->droppedFrameCount();
@@ -55,4 +55,4 @@ VideoPlaybackQuality* HTMLVideoElementMediaSource::getVideoPlaybackQuality(HTMLV
     return VideoPlaybackQuality::create(videoElement.document(), total, dropped, corrupted);
 }
 
-}
+} // namespace blink