Cast: Implement log compression and

chrome/renderer/media/cast_session_delegate.h

Index: chrome/renderer/media/cast_session_delegate.h
diff --git a/chrome/renderer/media/cast_session_delegate.h b/chrome/renderer/media/cast_session_delegate.h
index f02dfa37e33a3017ea826093c4c225c4117df3bd..364dd9a6b6cb3428eb88e6a911abdb7f5a3c6062 100644
--- a/chrome/renderer/media/cast_session_delegate.h
+++ b/chrome/renderer/media/cast_session_delegate.h
@@ -20,6 +20,7 @@
 #include "media/cast/logging/logging_defines.h"
 
 namespace base {
+class BinaryValue;
 class DictionaryValue;
 class MessageLoopProxy;
 }  // namespace base
@@ -48,7 +49,7 @@ class CastSessionDelegate {
       media::cast::AudioFrameInput>&)> AudioFrameInputAvailableCallback;
   typedef base::Callback<void(const scoped_refptr<
       media::cast::VideoFrameInput>&)> VideoFrameInputAvailableCallback;
-  typedef base::Callback<void(scoped_ptr<std::string>)> EventLogsCallback;
+  typedef base::Callback<void(scoped_ptr<base::BinaryValue>)> EventLogsCallback;
   typedef base::Callback<void(scoped_ptr<base::DictionaryValue>)> StatsCallback;
 
   CastSessionDelegate();