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

chrome/browser/renderer_host/render_widget_host.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/browser/renderer_host/render_widget_host.h"
 
 #include "app/keyboard_codes.h"
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
@@ skipping 133 matching lines @@
     DCHECK(rv);
   }
 
   Destroy();
 }
 
 bool RenderWidgetHost::IsRenderView() const {
   return false;
 }
 
-void RenderWidgetHost::OnMessageReceived(const IPC::Message &msg) {
+bool RenderWidgetHost::OnMessageReceived(const IPC::Message &msg) {
+  bool handled = true;
   bool msg_is_ok = true;
   IPC_BEGIN_MESSAGE_MAP_EX(RenderWidgetHost, msg, msg_is_ok)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RenderViewReady, OnMsgRenderViewReady)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RenderViewGone, OnMsgRenderViewGone)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Close, OnMsgClose)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RequestMove, OnMsgRequestMove)
     IPC_MESSAGE_HANDLER(ViewHostMsg_PaintAtSize_ACK, OnMsgPaintAtSizeAck)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateRect, OnMsgUpdateRect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_HandleInputEvent_ACK, OnMsgInputEventAck)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Focus, OnMsgFocus)
@@ skipping 20 matching lines @@
     IPC_MESSAGE_HANDLER(ViewHostMsg_AcceleratedSurfaceSetTransportDIB,
                         OnAcceleratedSurfaceSetTransportDIB)
     IPC_MESSAGE_HANDLER(ViewHostMsg_AcceleratedSurfaceBuffersSwapped,
                         OnAcceleratedSurfaceBuffersSwapped)
 #elif defined(OS_POSIX)
     IPC_MESSAGE_HANDLER(ViewHostMsg_CreatePluginContainer,
                         OnMsgCreatePluginContainer)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DestroyPluginContainer,
                         OnMsgDestroyPluginContainer)
 #endif
-    IPC_MESSAGE_UNHANDLED_ERROR()
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP_EX()
 
   if (!msg_is_ok) {
     // The message de-serialization failed. Kill the renderer process.
     UserMetrics::RecordAction(UserMetricsAction("BadMessageTerminate_RWH"));
     process()->ReceivedBadMessage();
   }
+  return handled;
 }
 
 bool RenderWidgetHost::Send(IPC::Message* msg) {
   return process_->Send(msg);
 }
 
 void RenderWidgetHost::WasHidden() {
   is_hidden_ = true;
 
   // Don't bother reporting hung state when we aren't the active tab.
@@ skipping 1035 matching lines @@
     return;
 
   for (int i = 0; i < static_cast<int>(deferred_plugin_handles_.size()); i++) {
 #if defined(TOOLKIT_USES_GTK)
     view_->CreatePluginContainer(deferred_plugin_handles_[i]);
 #endif
   }
 
   deferred_plugin_handles_.clear();
 }