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

ppapi/proxy/ppb_pdf_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_pdf_proxy.h"
 
 #include <string.h>  // For memcpy.
 
 #include <map>
 
@@ skipping 107 matching lines @@
 }
 
 const void* PPB_PDF_Proxy::GetSourceInterface() const {
   return &ppb_pdf;
 }
 
 InterfaceID PPB_PDF_Proxy::GetInterfaceId() const {
   return INTERFACE_ID_PPB_PDF;
 }
 
-void PPB_PDF_Proxy::OnMessageReceived(const IPC::Message& msg) {
+bool PPB_PDF_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_PDF_Proxy, msg)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBPDF_GetFontFileWithFallback,
                         OnMsgGetFontFileWithFallback)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBPDF_GetFontTableForPrivateFontFile,
                         OnMsgGetFontTableForPrivateFontFile)
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   // TODO(brettw): handle bad messages!
+  return handled;
 }
 
 void PPB_PDF_Proxy::OnMsgGetFontFileWithFallback(
     PP_Module module,
     const SerializedFontDescription& in_desc,
     int32_t charset,
     PP_Resource* result) {
   PP_FontDescription_Dev desc;
   in_desc.SetToPPFontDescription(dispatcher(), &desc, false);
   *result = ppb_pdf_target()->GetFontFileWithFallback(module, &desc,
@@ skipping 10 matching lines @@
           font_file, table, NULL, &table_length))
     return;
 
   result->resize(table_length);
   ppb_pdf_target()->GetFontTableForPrivateFontFile(font_file, table,
       const_cast<char*>(result->c_str()), &table_length);
 }
 
 }  // namespace proxy
 }  // namespace pp