[Extensions] Kill off ExtensionMsg_AddMessageToConsole

extensions/browser/extension_function.cc

Index: extensions/browser/extension_function.cc
diff --git a/extensions/browser/extension_function.cc b/extensions/browser/extension_function.cc
index de84548d44105ea6b23b5d4df41d2b9558c80925..f9a7d3f0e59c2440e08642e2d775a9849e5bf55d 100644
--- a/extensions/browser/extension_function.cc
+++ b/extensions/browser/extension_function.cc
@@ -479,8 +479,10 @@ void UIThreadExtensionFunction::SetTransferredBlobUUIDs(
 void UIThreadExtensionFunction::WriteToConsole(
     content::ConsoleMessageLevel level,
     const std::string& message) {
-  render_frame_host_->Send(new ExtensionMsg_AddMessageToConsole(
-      render_frame_host_->GetRoutingID(), level, message));
+  // Only the main frame handles dev tools messages.
+  WebContents::FromRenderFrameHost(render_frame_host_)
+      ->GetMainFrame()
+      ->AddMessageToConsole(level, message);
 }
 
 IOThreadExtensionFunction::IOThreadExtensionFunction()