Reland "Added option to specify a maximum file size when recording an AEC dump."

talk/app/webrtc/peerconnectioninterface.h

Index: talk/app/webrtc/peerconnectioninterface.h
diff --git a/talk/app/webrtc/peerconnectioninterface.h b/talk/app/webrtc/peerconnectioninterface.h
index 46481768b9a46af79ff6b4b709f11bd3641d1660..475145a61e83b4360deeb42f3b4d94d0fafa5099 100644
--- a/talk/app/webrtc/peerconnectioninterface.h
+++ b/talk/app/webrtc/peerconnectioninterface.h
@@ -640,9 +640,11 @@ class PeerConnectionFactoryInterface : public rtc::RefCountInterface {
   // Starts AEC dump using existing file. Takes ownership of |file| and passes
   // it on to VoiceEngine (via other objects) immediately, which will take
   // the ownerhip. If the operation fails, the file will be closed.
-  // TODO(grunell): Remove when Chromium has started to use AEC in each source.
-  // http://crbug.com/264611.
-  virtual bool StartAecDump(rtc::PlatformFile file) = 0;
+  // A maximum file size in bytes can be specified. When the file size limit is
+  // reached, logging is stopped automatically. If max_size_bytes is set to a
+  // value <= 0, no limit will be used, and logging will continue until the
+  // StopAecDump function is called.
+  virtual bool StartAecDump(rtc::PlatformFile file, int64_t max_size_bytes) = 0;
 
   // Stops logging the AEC dump.
   virtual void StopAecDump() = 0;