Make IPC::Channel::Listener:OnMessageReceived have a return value indicating ...

chrome/renderer/webplugin_delegate_proxy.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/renderer/webplugin_delegate_proxy.h"
 
 #if defined(TOOLKIT_USES_GTK)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 406 matching lines @@
 }
 
 void WebPluginDelegateProxy::DidManualLoadFail() {
   Send(new PluginMsg_DidManualLoadFail(instance_id_));
 }
 
 void WebPluginDelegateProxy::InstallMissingPlugin() {
   Send(new PluginMsg_InstallMissingPlugin(instance_id_));
 }
 
-void WebPluginDelegateProxy::OnMessageReceived(const IPC::Message& msg) {
+bool WebPluginDelegateProxy::OnMessageReceived(const IPC::Message& msg) {
   child_process_logging::SetActiveURL(page_url_);
 
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(WebPluginDelegateProxy, msg)
     IPC_MESSAGE_HANDLER(PluginHostMsg_SetWindow, OnSetWindow)
 #if defined(OS_WIN)
     IPC_MESSAGE_HANDLER(PluginHostMsg_SetWindowlessPumpEvent,
                         OnSetWindowlessPumpEvent)
 #endif
     IPC_MESSAGE_HANDLER(PluginHostMsg_CancelResource, OnCancelResource)
     IPC_MESSAGE_HANDLER(PluginHostMsg_InvalidateRect, OnInvalidateRect)
     IPC_MESSAGE_HANDLER(PluginHostMsg_GetWindowScriptNPObject,
                         OnGetWindowScriptNPObject)
@@ skipping 31 matching lines @@
                         OnAcceleratedSurfaceSetTransportDIB)
     IPC_MESSAGE_HANDLER(PluginHostMsg_AllocTransportDIB,
                         OnAcceleratedSurfaceAllocTransportDIB)
     IPC_MESSAGE_HANDLER(PluginHostMsg_FreeTransportDIB,
                         OnAcceleratedSurfaceFreeTransportDIB)
     IPC_MESSAGE_HANDLER(PluginHostMsg_AcceleratedSurfaceBuffersSwapped,
                         OnAcceleratedSurfaceBuffersSwapped)
 #endif
     IPC_MESSAGE_HANDLER(PluginHostMsg_URLRedirectResponse,
                         OnURLRedirectResponse)
-
-    IPC_MESSAGE_UNHANDLED_ERROR()
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
+  DCHECK(handled);
+  return handled;
 }
 
 void WebPluginDelegateProxy::OnChannelError() {
   if (plugin_) {
     if (window_) {
       // The actual WebPluginDelegate never got a chance to tell the WebPlugin
       // its window was going away. Do it on its behalf.
       WillDestroyWindow();
     }
     plugin_->Invalidate();
@@ skipping 1065 matching lines @@
 #endif
 
 void WebPluginDelegateProxy::OnURLRedirectResponse(bool allow,
                                                    int resource_id) {
   if (!plugin_)
     return;
 
   plugin_->URLRedirectResponse(allow, resource_id);
 }