Introducing DecoderBuffer and general Buffer cleanup.

media/base/buffers.h

Index: media/base/buffers.h
diff --git a/media/base/buffers.h b/media/base/buffers.h
index f4e42642b4f240ce961d987094d59e80365c5dcb..d14f4db515877eabc6e438ba0ad242df0342752d 100644
--- a/media/base/buffers.h
+++ b/media/base/buffers.h
@@ -33,8 +33,6 @@
 
 namespace media {
 
-class DecryptConfig;
-
 // Indicates an invalid or missing timestamp.
 MEDIA_EXPORT extern inline base::TimeDelta kNoTimestamp() {
   return base::TimeDelta::FromMicroseconds(kint64min);
@@ -56,9 +54,6 @@ class MEDIA_EXPORT Buffer : public base::RefCountedThreadSafe<Buffer> {
   // If there's no data in this buffer, it represents end of stream.
   bool IsEndOfStream() const;
 
-  // Return DecryptConfig if buffer is encrypted, or NULL otherwise.
-  virtual const DecryptConfig* GetDecryptConfig() const;
-
   base::TimeDelta GetTimestamp() const {
     return timestamp_;
   }