Remove IPC_BEGIN_MESSAGE_MAP_EX macro since r270839 made all bad IPCs kill their child processes.

content/browser/fileapi/fileapi_message_filter.cc

Index: content/browser/fileapi/fileapi_message_filter.cc
===================================================================
--- content/browser/fileapi/fileapi_message_filter.cc	(revision 271040)
+++ content/browser/fileapi/fileapi_message_filter.cc	(working copy)
@@ -144,11 +144,9 @@
   return NULL;
 }
 
-bool FileAPIMessageFilter::OnMessageReceived(
-    const IPC::Message& message, bool* message_was_ok) {
-  *message_was_ok = true;
+bool FileAPIMessageFilter::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(FileAPIMessageFilter, message, *message_was_ok)
+  IPC_BEGIN_MESSAGE_MAP(FileAPIMessageFilter, message)
     IPC_MESSAGE_HANDLER(FileSystemHostMsg_OpenFileSystem, OnOpenFileSystem)
     IPC_MESSAGE_HANDLER(FileSystemHostMsg_ResolveURL, OnResolveURL)
     IPC_MESSAGE_HANDLER(FileSystemHostMsg_DeleteFileSystem, OnDeleteFileSystem)
@@ -192,7 +190,7 @@
     IPC_MESSAGE_HANDLER(StreamHostMsg_Clone, OnCloneStream)
     IPC_MESSAGE_HANDLER(StreamHostMsg_Remove, OnRemoveStream)
     IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP_EX()
+  IPC_END_MESSAGE_MAP()
   return handled;
 }