Add VideoPacket struct for video packets. Refactor Decode interface to use it.

remoting/base/util.h

Index: remoting/base/util.h
diff --git a/remoting/base/util.h b/remoting/base/util.h
index d7f4128ed3088b6d29340c42698c25a1d791a23d..bf5cff5a0282d764733afdbac1b28b04c5eea54e 100644
--- a/remoting/base/util.h
+++ b/remoting/base/util.h
@@ -5,11 +5,12 @@
 #ifndef REMOTING_BASE_UTIL_H_
 #define REMOTING_BASE_UTIL_H_
 
-#include "remoting/proto/video.pb.h"
+#include "media/base/video_frame.h"
 
 namespace remoting {
 
-int GetBytesPerPixel(PixelFormat format);
+// TODO(sergeyu): Move this to media::VideoFrame.
+int GetBytesPerPixel(media::VideoFrame::Format format);
 
 }  // namespace remoting