[Extensions] Use a separate IPC message for extension events

extensions/browser/app_window/app_window_contents.cc

Index: extensions/browser/app_window/app_window_contents.cc
diff --git a/extensions/browser/app_window/app_window_contents.cc b/extensions/browser/app_window/app_window_contents.cc
index 0d5f033c7efafc175859d61d1a7b754840c4caf1..e40be766e08c687e8f59dc5cc29e4ce2e20b9f50 100644
--- a/extensions/browser/app_window/app_window_contents.cc
+++ b/extensions/browser/app_window/app_window_contents.cc
@@ -72,9 +72,9 @@ void AppWindowContentsImpl::NativeWindowChanged(
   args.Append(std::move(dictionary));
 
   content::RenderFrameHost* rfh = web_contents_->GetMainFrame();
-  rfh->Send(new ExtensionMsg_MessageInvoke(
-      rfh->GetRoutingID(), host_->extension_id(), "app.window",
-      "updateAppWindowProperties", args, false));
+  rfh->Send(new ExtensionMsg_MessageInvoke(rfh->GetRoutingID(),
+                                           host_->extension_id(), "app.window",
+                                           "updateAppWindowProperties", args));
 }
 
 void AppWindowContentsImpl::NativeWindowClosed() {
@@ -85,9 +85,9 @@ void AppWindowContentsImpl::NativeWindowClosed() {
 void AppWindowContentsImpl::DispatchWindowShownForTests() const {
   base::ListValue args;
   content::RenderFrameHost* rfh = web_contents_->GetMainFrame();
-  rfh->Send(new ExtensionMsg_MessageInvoke(
-      rfh->GetRoutingID(), host_->extension_id(), "app.window",
-      "appWindowShownForTests", args, false));
+  rfh->Send(new ExtensionMsg_MessageInvoke(rfh->GetRoutingID(),
+                                           host_->extension_id(), "app.window",
+                                           "appWindowShownForTests", args));
 }
 
 void AppWindowContentsImpl::OnWindowReady() {