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

chrome/browser/importer/firefox_importer_unittest_utils_mac.cc

Index: chrome/browser/importer/firefox_importer_unittest_utils_mac.cc
===================================================================
--- chrome/browser/importer/firefox_importer_unittest_utils_mac.cc	(revision 70108)
+++ chrome/browser/importer/firefox_importer_unittest_utils_mac.cc	(working copy)
@@ -94,11 +94,14 @@
       sender_->Send(new Msg_Decryptor_Quit());
   }
 
-  virtual void OnMessageReceived(const IPC::Message& msg) {
+  virtual bool OnMessageReceived(const IPC::Message& msg) {
+    bool handled = true;
     IPC_BEGIN_MESSAGE_MAP(FFDecryptorServerChannelListener, msg)
       IPC_MESSAGE_HANDLER(Msg_Decryptor_InitReturnCode, OnInitDecryptorResponse)
       IPC_MESSAGE_HANDLER(Msg_Decryptor_Response, OnDecryptedTextResonse)
+      IPC_MESSAGE_UNHANDLED(handled = false)
     IPC_END_MESSAGE_MAP()
+    return handled;
   }
 
   // If an error occured, just kill the message Loop.
@@ -231,12 +234,15 @@
     MessageLoop::current()->Quit();
   }
 
-  virtual void OnMessageReceived(const IPC::Message& msg) {
+  virtual bool OnMessageReceived(const IPC::Message& msg) {
+    bool handled = true;
     IPC_BEGIN_MESSAGE_MAP(FFDecryptorClientChannelListener, msg)
       IPC_MESSAGE_HANDLER(Msg_Decryptor_Init, OnDecryptor_Init)
       IPC_MESSAGE_HANDLER(Msg_Decrypt, OnDecrypt)
       IPC_MESSAGE_HANDLER(Msg_Decryptor_Quit, OnQuitRequest)
+      IPC_MESSAGE_UNHANDLED(handled = false)
     IPC_END_MESSAGE_MAP()
+    return handled;
   }
 
   virtual void OnChannelError() {