Remove separate thread for the shell on Android.

mojo/services/native_viewport/native_viewport_android.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/services/native_viewport/native_viewport_android.h"
 
 #include <android/native_window_jni.h>
 #include "mojo/services/native_viewport/android/mojo_viewport.h"
 #include "mojo/shell/context.h"
 #include "ui/events/event.h"
@@ skipping 53 matching lines @@
 
 gfx::Size NativeViewportAndroid::GetSize() {
   return size_;
 }
 
 void NativeViewportAndroid::Init() {
   MojoViewportInit* init = new MojoViewportInit();
   init->ui_runner = context_->task_runners()->ui_runner();
   init->native_viewport = GetWeakPtr();
 
-  context_->task_runners()->java_runner()->PostTask(FROM_HERE,
-      base::Bind(MojoViewport::CreateForActivity,
-                 context_->activity(),
-                 init));
+  MojoViewport::CreateForActivity(context_->activity(), init);
 }
 
 void NativeViewportAndroid::Close() {
   // TODO(beng): close activity containing MojoView?
 
   // TODO(beng): perform this in response to view destruction.
   delegate_->OnDestroyed();
 }
 
 // static
 scoped_ptr<NativeViewport> NativeViewport::Create(
     shell::Context* context,
     NativeViewportDelegate* delegate) {
   return scoped_ptr<NativeViewport>(
       new NativeViewportAndroid(context, delegate)).Pass();
 }
 
 }  // namespace services
 }  // namespace mojo