Allow multiple logging::LogMessage{Handler,Listener}s

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 23b5a2443085f09635bcba5302cb0923b28068c9..54f6d27e451063513a5c5a9eed864ee9c35df99e 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -963,6 +963,10 @@ void RenderFrameHostImpl::OnDidAddMessageToConsole(
   if (delegate_->DidAddMessageToConsole(level, message, line_no, source_id))
     return;
 
+  // In order for CSP violation detections in the tests to work, console

[wychen, 2016/11/18 21:14:00]

This comment should probably move to https://crrev.com/2013573007/.

+  // messages must be forwarded to logging::LogMessage().
+  // Ref: https://crbug.com/638050
+
   // Pass through log level only on WebUI pages to limit console spew.
   const bool is_web_ui =
       HasWebUIScheme(delegate_->GetMainFrameLastCommittedURL());