Mojo: Add the beginnings of a proper embedder API.

mojo/shell/context.cc

 // Copyright 2013 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/shell/context.h"
 
 #include "mojo/shell/dynamic_service_loader.h"
 #include "mojo/shell/network_delegate.h"
-#include "mojo/system/core_impl.h"
+#include "mojo/system/embedder.h"
 
 namespace mojo {
 namespace shell {
 
 Context::Context()
     : task_runners_(base::MessageLoop::current()->message_loop_proxy()),
       storage_(),
       loader_(task_runners_.io_runner(),
               task_runners_.file_runner(),
               task_runners_.cache_runner(),
               scoped_ptr<net::NetworkDelegate>(new NetworkDelegate()),
               storage_.profile_path()) {
-  system::CoreImpl::Init();
+  embedder::Init();
   BindingsSupport::Set(&bindings_support_impl_);
   dynamic_service_loader_.reset(new DynamicServiceLoader(this));
   service_manager_.set_default_loader(dynamic_service_loader_.get());
 }
 
 Context::~Context() {
   service_manager_.set_default_loader(NULL);
   BindingsSupport::Set(NULL);
 }
 
 }  // namespace shell
 }  // namespace mojo