Adding VP8 Alpha support in Media Source

media/webm/webm_constants.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_WEBM_WEBM_CONSTANTS_H_
 #define MEDIA_WEBM_WEBM_CONSTANTS_H_
 
 #include "base/basictypes.h"
 #include "media/base/media_export.h"
 
@@ skipping 138 matching lines @@
 const int kWebMIdSegment = 0x18538067;
 const int kWebMIdSegmentFamily = 0x4444;
 const int kWebMIdSegmentFilename = 0x7384;
 const int kWebMIdSegmentUID = 0x73A4;
 const int kWebMIdSilentTrackNumber = 0x58D7;
 const int kWebMIdSilentTracks = 0x5854;
 const int kWebMIdSimpleBlock = 0xA3;
 const int kWebMIdSimpleTag = 0x67C8;
 const int kWebMIdSlices = 0x8E;
 const int kWebMIdStereoMode = 0x53B8;
+const int kWebMIdAlphaMode = 0x53C0;

[acolwell GONE FROM CHROMIUM, 2013/05/21 17:14:11]

nit: Please place this in alphabetical order.

[vignesh, 2013/05/21 18:57:56]

Done.

 const int kWebMIdTag = 0x7373;
 const int kWebMIdTagAttachmentUID = 0x63C6;
 const int kWebMIdTagBinary = 0x4485;
 const int kWebMIdTagChapterUID = 0x63C4;
 const int kWebMIdTagDefault = 0x4484;
 const int kWebMIdTagEditionUID = 0x63C9;
 const int kWebMIdTagLanguage = 0x447A;
 const int kWebMIdTagName = 0x45A3;
 const int kWebMIdTags = 0x1254C367;
 const int kWebMIdTagString = 0x4487;
@@ skipping 46 matching lines @@
 const int kWebMTrackTypeDescriptionsOrMetadata = 0x21;
 
 MEDIA_EXPORT extern const char kWebMCodecSubtitles[];
 MEDIA_EXPORT extern const char kWebMCodecCaptions[];
 MEDIA_EXPORT extern const char kWebMCodecDescriptions[];
 MEDIA_EXPORT extern const char kWebMCodecMetadata[];
 
 }  // namespace media
 
 #endif  // MEDIA_WEBM_WEBM_CONSTANTS_H_