Hacking ffvp9 decoder support for profiling.

media/ffmpeg/ffmpeg_common.h

Index: media/ffmpeg/ffmpeg_common.h
diff --git a/media/ffmpeg/ffmpeg_common.h b/media/ffmpeg/ffmpeg_common.h
index fa5dfee1dd5ef332101d3abbd5c96a74a04f2463..56a8a94285bf04d657691b65caece44e28657f1f 100644
--- a/media/ffmpeg/ffmpeg_common.h
+++ b/media/ffmpeg/ffmpeg_common.h
@@ -37,7 +37,11 @@ extern "C" {
 // Temporarily disable possible loss of data warning.
 // TODO(scherkus): fix and upstream the compiler warnings.
 MSVC_PUSH_DISABLE_WARNING(4244);
+// Temporarily disable "parenthesized type followed by an initializer list is a
+// non-standard"
+MSVC_PUSH_DISABLE_WARNING(4576);
 #include <libavcodec/avcodec.h>
+#include <libavcodec/internal.h>
 #include <libavformat/avformat.h>
 #include <libavformat/internal.h>
 #include <libavformat/avio.h>
@@ -47,6 +51,7 @@ MSVC_PUSH_DISABLE_WARNING(4244);
 #include <libavutil/mathematics.h>
 #include <libavutil/opt.h>
 MSVC_POP_WARNING();
+MSVC_POP_WARNING();
 }  // extern "C"
 
 namespace media {
@@ -79,6 +84,11 @@ inline void ScopedPtrAVFreeFrame::operator()(void* x) const {
   av_frame_free(&frame);
 }
 
+inline void ScopedPtrAVFreeParserContext::operator()(void* x) const {
+  AVCodecParserContext* parser = static_cast<AVCodecParserContext*>(x);
+  av_parser_close(parser);
+}
+
 // Converts an int64_t timestamp in |time_base| units to a base::TimeDelta.
 // For example if |timestamp| equals 11025 and |time_base| equals {1, 44100}
 // then the return value will be a base::TimeDelta for 0.25 seconds since that