iOS HW H264 support.

talk/media/base/constants.h

 /*
  * libjingle
  * Copyright 2012 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 140 matching lines @@
 // ts_126114v120700p.pdf
 extern const int kRtpVideoRotationHeaderExtensionDefaultId;
 extern const char kRtpVideoRotationHeaderExtension[];
 // We don't support 6 bit CVO. Added here for testing purpose.
 extern const char kRtpVideoRotation6BitsHeaderExtensionForTesting[];
 
 extern const int kNumDefaultUnsignalledVideoRecvStreams;
 
 extern const char kVp8CodecName[];
 extern const char kVp9CodecName[];
+extern const char kH264CodecName[];
 
 extern const int kDefaultVp8PlType;
 extern const int kDefaultVp9PlType;
+extern const int kDefaultH264PlType;
 extern const int kDefaultRedPlType;
 extern const int kDefaultUlpfecType;
 extern const int kDefaultRtxVp8PlType;
 
 extern const int kDefaultVideoMaxWidth;
 extern const int kDefaultVideoMaxHeight;
 extern const int kDefaultVideoMaxFramerate;
 }  // namespace cricket
 
 #endif  // TALK_MEDIA_BASE_CONSTANTS_H_