EDK: Make mojo::embedder::AsyncWait (etc.) take an std::function instead of a base::Callback.

mojo/edk/embedder/embedder.cc

 // Copyright 2014 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 "mojo/edk/embedder/embedder.h"
 
 #include <utility>
 
 #include "base/atomicops.h"
 #include "base/bind.h"
@@ skipping 77 matching lines @@
 
   DCHECK(!internal::g_platform_support);
   internal::g_platform_support = platform_support.release();
 
   DCHECK(!internal::g_core);
   internal::g_core = new system::Core(internal::g_platform_support);
 }
 
 MojoResult AsyncWait(MojoHandle handle,
                      MojoHandleSignals signals,
-                     const base::Callback<void(MojoResult)>& callback) {
+                     const std::function<void(MojoResult)>& callback) {
   return internal::g_core->AsyncWait(handle, signals, callback);
 }
 
 MojoResult CreatePlatformHandleWrapper(
     ScopedPlatformHandle platform_handle,
     MojoHandle* platform_handle_wrapper_handle) {
   DCHECK(platform_handle_wrapper_handle);
 
   auto dispatcher =
       system::PlatformHandleDispatcher::Create(platform_handle.Pass());
@@ skipping 195 matching lines @@
   DCHECK(channel_info);
   DCHECK(internal::g_ipc_support);
 
   system::ChannelManager* channel_manager =
       internal::g_ipc_support->channel_manager();
   channel_manager->WillShutdownChannel(channel_info->channel_id);
 }
 
 }  // namespace embedder
 }  // namespace mojo