Added logging calls to FFmpegDemuxer.

media/base/video_frame.cc

Index: media/base/video_frame.cc
diff --git a/media/base/video_frame.cc b/media/base/video_frame.cc
index de7440ae20cf386df0e2b0caa8a52ded697f5c26..30622e0938993ebfe4a9bb541c85a4a961410b0f 100644
--- a/media/base/video_frame.cc
+++ b/media/base/video_frame.cc
@@ -42,6 +42,32 @@ scoped_refptr<VideoFrame> VideoFrame::CreateFrame(
   return frame;
 }
 
+
+std::string VideoFrame::FormatToString(VideoFrame::Format format) {
+  switch (format) {
+    case VideoFrame::Format::INVALID:
+      return "INVALID";
+    case VideoFrame::Format::RGB32:
+      return "RGB32";
+    case VideoFrame::Format::YV12:
+      return "YV12";
+    case VideoFrame::Format::YV16:
+      return "YV16";
+    case VideoFrame::Format::EMPTY:
+      return "EMPTY";
+    case VideoFrame::Format::I420:
+      return "I420";
+    case VideoFrame::Format::NATIVE_TEXTURE:
+      return "NATIVE_TEXTURE";
+#if defined(GOOGLE_TV)
+    case VideoFrame::Format::HOLE:
+      return "HOLE";
+#endif
+    case VideoFrame::Format::YV12A:
+      return "YV12A";
+  }
+}
+
 // static
 bool VideoFrame::IsValidConfig(VideoFrame::Format format,
                                const gfx::Size& coded_size,