Deprecate LogCB in favor of using MediaLog

media/formats/webm/webm_content_encodings_client.h

Index: media/formats/webm/webm_content_encodings_client.h
diff --git a/media/formats/webm/webm_content_encodings_client.h b/media/formats/webm/webm_content_encodings_client.h
index 4b1bfe03ec2691b1011f81f2dcbb44cbe6338ad3..85f7bf329a88e5e39e2e58cceba5f2596a1b760d 100644
--- a/media/formats/webm/webm_content_encodings_client.h
+++ b/media/formats/webm/webm_content_encodings_client.h
@@ -22,7 +22,7 @@ typedef std::vector<ContentEncoding*> ContentEncodings;
 // Parser for WebM ContentEncodings element.
 class MEDIA_EXPORT WebMContentEncodingsClient : public WebMParserClient {
  public:
-  explicit WebMContentEncodingsClient(const LogCB& log_cb);
+  explicit WebMContentEncodingsClient(const scoped_refptr<MediaLog>& media_log);
   ~WebMContentEncodingsClient() override;
 
   const ContentEncodings& content_encodings() const;
@@ -34,7 +34,7 @@ class MEDIA_EXPORT WebMContentEncodingsClient : public WebMParserClient {
   bool OnBinary(int id, const uint8* data, int size) override;
 
  private:
-  LogCB log_cb_;
+  scoped_refptr<MediaLog> media_log_;
   scoped_ptr<ContentEncoding> cur_content_encoding_;
   bool content_encryption_encountered_;
   ContentEncodings content_encodings_;