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

talk/app/webrtc/peerconnectionfactory.cc

Index: talk/app/webrtc/peerconnectionfactory.cc
diff --git a/talk/app/webrtc/peerconnectionfactory.cc b/talk/app/webrtc/peerconnectionfactory.cc
index 672355085a6b775e57264dd92a241f64295260e3..9a78fd1b9f280a1f1847e137161f4f3779b50238 100644
--- a/talk/app/webrtc/peerconnectionfactory.cc
+++ b/talk/app/webrtc/peerconnectionfactory.cc
@@ -230,9 +230,10 @@ PeerConnectionFactory::CreateVideoSource(
   return VideoSourceProxy::Create(signaling_thread_, source);
 }
 
-bool PeerConnectionFactory::StartAecDump(rtc::PlatformFile file) {
+bool PeerConnectionFactory::StartAecDump(rtc::PlatformFile file,
+                                         int64_t max_size_bytes) {
   RTC_DCHECK(signaling_thread_->IsCurrent());
-  return channel_manager_->StartAecDump(file);
+  return channel_manager_->StartAecDump(file, max_size_bytes);
 }
 
 void PeerConnectionFactory::StopAecDump() {