Media: AudioVideoMetadataParser - Parse rotation metadata.

media/base/audio_video_metadata_extractor.h

Index: media/base/audio_video_metadata_extractor.h
diff --git a/media/base/audio_video_metadata_extractor.h b/media/base/audio_video_metadata_extractor.h
index affe7945d374be43bd56c91bf2bb5fe1d6f07871..7ea73e20ab324af8830c6bc42312a7f899e7ecf5 100644
--- a/media/base/audio_video_metadata_extractor.h
+++ b/media/base/audio_video_metadata_extractor.h
@@ -34,6 +34,9 @@ class MEDIA_EXPORT AudioVideoMetadataExtractor {
   int width() const;
   int height() const;
 
+  // Returns -1 if undefined.
+  int rotation() const;
+
   // Returns -1 or an empty string if the value is undefined.
   const std::string& album() const;
   const std::string& artist() const;
@@ -67,6 +70,7 @@ class MEDIA_EXPORT AudioVideoMetadataExtractor {
   std::string encoded_by_;
   std::string genre_;
   std::string language_;
+  int rotation_;
   std::string title_;
   int track_;