Implement browser-side logging to WebRtc log

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1502 matching lines @@
 void RenderProcessHostImpl::DisableAecDump() {
   // Posting on the FILE thread and then replying back on the UI thread is only
   // for avoiding races between enable and disable. Nothing is done on the FILE
   // thread.
   BrowserThread::PostTaskAndReply(
       BrowserThread::FILE, FROM_HERE,
       base::Bind(&DisableAecDumpOnFileThread),
       base::Bind(&RenderProcessHostImpl::SendDisableAecDumpToRenderer,
                  weak_factory_.GetWeakPtr()));
 }
+
+void RenderProcessHostImpl::SetWebRtcLogMessageCallback(
+    base::Callback<void(const std::string&)> callback) {
+  DCHECK(webrtc_log_message_callback_.is_null());
+  webrtc_log_message_callback_ = callback;
+}
 #endif
 
 IPC::ChannelProxy* RenderProcessHostImpl::GetChannel() {
   return channel_.get();
 }
 
 void RenderProcessHostImpl::AddFilter(BrowserMessageFilter* filter) {
   channel_->AddFilter(filter->GetFilter());
 }
 
@@ skipping 346 matching lines @@
 
 void RenderProcessHostImpl::EndFrameSubscription(int route_id) {
   if (!gpu_message_filter_)
     return;
   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE, base::Bind(
       &GpuMessageFilter::EndFrameSubscription,
       gpu_message_filter_,
       route_id));
 }
 
+#if defined(ENABLE_WEBRTC)
+void RenderProcessHostImpl::WebRtcLogMessage(const std::string& message) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  if (!webrtc_log_message_callback_.is_null())
+    webrtc_log_message_callback_.Run(message);
+}
+#endif
+
 void RenderProcessHostImpl::OnShutdownRequest() {
   // Don't shut down if there are active RenderViews, or if there are pending
   // RenderViews being swapped back in.
   // In single process mode, we never shutdown the renderer.
   int num_active_views = GetActiveViewCount();
   if (pending_views_ || num_active_views > 0 || run_renderer_in_process())
     return;
 
   // Notify any contents that might have swapped out renderers from this
   // process. They should not attempt to swap them back in.
@@ skipping 127 matching lines @@
     return;
   Send(new MediaStreamMsg_EnableAecDump(file_for_transit));
 }
 
 void RenderProcessHostImpl::SendDisableAecDumpToRenderer() {
   Send(new MediaStreamMsg_DisableAecDump());
 }
 #endif
 
 }  // namespace content