Fix the H.264 config detection code which lead to video playback errors.

content/common/gpu/media/dxva_video_decode_accelerator_win.h

Index: content/common/gpu/media/dxva_video_decode_accelerator_win.h
diff --git a/content/common/gpu/media/dxva_video_decode_accelerator_win.h b/content/common/gpu/media/dxva_video_decode_accelerator_win.h
index 56087b335e8856640b1e69e41bb8fc8ede617aef..950eda5a090cd079a7bcd1f510722562b1236304 100644
--- a/content/common/gpu/media/dxva_video_decode_accelerator_win.h
+++ b/content/common/gpu/media/dxva_video_decode_accelerator_win.h
@@ -29,6 +29,7 @@
 #include "base/threading/thread.h"
 #include "base/win/scoped_comptr.h"
 #include "content/common/content_export.h"
+#include "media/filters/h264_parser.h"
 #include "media/video/video_decode_accelerator.h"
 
 interface IMFSample;
@@ -75,6 +76,8 @@ class H264ConfigChangeDetector {
   // we want to honor after we see an IDR slice.
   bool pending_config_changed_;
 
+  scoped_ptr<media::H264Parser> parser_;
+
   DISALLOW_COPY_AND_ASSIGN(H264ConfigChangeDetector);
 };
 
@@ -446,7 +449,7 @@ class CONTENT_EXPORT DXVAVideoDecodeAccelerator
   // when these changes occur then, the decoder works fine. The
   // H264ConfigChangeDetector class provides functionality to check if the
   // stream configuration changed.
-  H264ConfigChangeDetector config_change_detector_;
+  scoped_ptr<H264ConfigChangeDetector> config_change_detector_;
 
   // Contains the initialization parameters for the video.
   Config config_;