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

ppapi/proxy/ppb_font_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 "ppapi/proxy/ppb_font_proxy.h"
 
 #include "ppapi/c/dev/ppb_font_dev.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ skipping 169 matching lines @@
 }
 
 const void* PPB_Font_Proxy::GetSourceInterface() const {
   return &ppb_font_interface;
 }
 
 InterfaceID PPB_Font_Proxy::GetInterfaceId() const {
   return INTERFACE_ID_PPB_FONT;
 }
 
-void PPB_Font_Proxy::OnMessageReceived(const IPC::Message& msg) {
+bool PPB_Font_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_Font_Proxy, msg)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFont_Create,
                         OnMsgCreate)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFont_DrawTextAt,
                         OnMsgDrawTextAt)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFont_MeasureText,
                         OnMsgMeasureText)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFont_CharacterOffsetForPixel,
                         OnMsgCharacterOffsetForPixel)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFont_PixelOffsetForCharacter,
                         OnMsgPixelOffsetForCharacter)
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
+  return handled;
 }
 
 void PPB_Font_Proxy::OnMsgCreate(
     PP_Module pp_module,
     const SerializedFontDescription& in_description,
     PP_Resource* result,
     SerializedFontDescription* out_description,
     std::string* out_metrics) {
   // Convert the face name in the input description.
   PP_FontDescription_Dev in_pp_desc;
@@ skipping 71 matching lines @@
   PP_TextRun_Dev run;
   run.text = text.Get(dispatcher());
   run.rtl = text_is_rtl;
   run.override_direction = override_direction;
 
   *result = ppb_font_target()->PixelOffsetForCharacter(font, &run, char_offset);
 }
 
 }  // namespace proxy
 }  // namespace pp