Log MediaSource parsing errors to the MediaLog so they can appear in chrome:media-internals.

media/base/stream_parser.h

Index: media/base/stream_parser.h
diff --git a/media/base/stream_parser.h b/media/base/stream_parser.h
index d4eb335ff45675e24c9994c99d531769b925f9e4..5c5e6e691d3fbc7db976b0694911c45907a30596 100644
--- a/media/base/stream_parser.h
+++ b/media/base/stream_parser.h
@@ -13,6 +13,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "media/base/media_export.h"
+#include "media/base/media_log.h"
 
 namespace media {
 
@@ -79,7 +80,8 @@ class MEDIA_EXPORT StreamParser {
                     const NewBuffersCB& video_cb,
                     const NeedKeyCB& need_key_cb,
                     const NewMediaSegmentCB& new_segment_cb,
-                    const base::Closure& end_of_segment_cb) = 0;
+                    const base::Closure& end_of_segment_cb,
+                    const LogCB& log_cb) = 0;
 
   // Called when a seek occurs. This flushes the current parser state
   // and puts the parser in a state where it can receive data for the new seek