Cache the override for WebRTC's AEC3 in RenderProcessHostImpl

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 32ad1d579ee0d5ffd5b0ce243c26900e571b4c77..045df34d88cf1a9bfb8ea1d1d742351fdd7c0322 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -2914,6 +2914,10 @@ bool RenderProcessHostImpl::StopWebRTCEventLog() {
 
 void RenderProcessHostImpl::SetEchoCanceller3(bool enable) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  // TODO(hlundin) Implement a test to verify that the setting works both with
+  // aec_dump_consumers already registered, and with those registered in the
+  // future. crbug.com/740104
+  override_aec3_ = enable;
 
   // Piggybacking on AEC dumps.
   // TODO(hlundin): Change name for aec_dump_consumers_;
@@ -3746,6 +3750,9 @@ void RenderProcessHostImpl::RegisterAecDumpConsumerOnUIThread(int id) {
         WebRTCInternals::GetInstance()->GetAudioDebugRecordingsFilePath());
     EnableAecDumpForId(file_with_extensions, id);
   }
+  if (override_aec3_) {
+    Send(new AudioProcessingMsg_EnableAec3(id, *override_aec3_));
+  }
 }
 
 void RenderProcessHostImpl::UnregisterAecDumpConsumerOnUIThread(int id) {