Extract supported codecs from CDM component manifest.

third_party/widevine/cdm/widevine_cdm_common.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 WIDEVINE_CDM_WIDEVINE_CDM_COMMON_H_
 #define WIDEVINE_CDM_WIDEVINE_CDM_COMMON_H_
 
 #include "base/files/file_path.h"
 
 // This file defines constants common to all Widevine CDM versions.
@@ skipping 27 matching lines @@
 // File name of the adapter on different platforms.
 const char kWidevineCdmAdapterFileName[] =
 #if defined(OS_MACOSX)
     "widevinecdmadapter.plugin";
 #elif defined(OS_WIN)
     "widevinecdmadapter.dll";
 #else  // OS_LINUX, etc.
     "libwidevinecdmadapter.so";
 #endif
 
+// The following strings are used to communicate supported codecs (from the
+// component manifest) via WebPluginInfo::WebPluginMimeType's additional params.
+const char kCdmSupportedCodecsParamName[] = "codecs";
+const char kCdmSupportedCodecsValueDelimiter = ',';
+const char kCdmSupportedCodecVorbis[] = "vorbis";
+const char kCdmSupportedCodecVp8[] = "vp8";
+#if defined(USE_PROPRIETARY_CODECS)
+const char kCdmSupportedCodecAac[] = "aac";
+const char kCdmSupportedCodecAvc1[] = "avc1";
+#endif  // defined(USE_PROPRIETARY_CODECS)
 
 #if defined(OS_MACOSX) || defined(OS_WIN)
 // CDM is installed by the component installer instead of the Chrome installer.
 #define WIDEVINE_CDM_IS_COMPONENT
 #endif  // defined(OS_MACOSX) || defined(OS_WIN)
 #endif  // defined(ENABLE_PEPPER_CDMS)
 
 #endif  // WIDEVINE_CDM_WIDEVINE_CDM_COMMON_H_