Moves android specific code into android directory

shell/ui_application_loader_android.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 "shell/ui_application_loader_android.h"
-
-#include "base/bind.h"
-#include "mojo/application_manager/application_manager.h"
-#include "shell/context.h"
-
-namespace mojo {
-
-UIApplicationLoader::UIApplicationLoader(
-    scoped_ptr<ApplicationLoader> real_loader,
-    shell::Context* context)
-    : loader_(real_loader.Pass()), context_(context) {
-}
-
-UIApplicationLoader::~UIApplicationLoader() {
-  context_->ui_loop()->PostTask(
-      FROM_HERE, base::Bind(&UIApplicationLoader::ShutdownOnUIThread,
-                            base::Unretained(this)));
-}
-
-void UIApplicationLoader::Load(ApplicationManager* manager,
-                               const GURL& url,
-                               ScopedMessagePipeHandle shell_handle,
-                               LoadCallback callback) {
-  DCHECK(shell_handle.is_valid());
-  context_->ui_loop()->PostTask(
-      FROM_HERE,
-      base::Bind(&UIApplicationLoader::LoadOnUIThread, base::Unretained(this),
-                 manager, url, base::Passed(&shell_handle)));
-}
-
-void UIApplicationLoader::OnApplicationError(ApplicationManager* manager,
-                                             const GURL& url) {
-  context_->ui_loop()->PostTask(
-      FROM_HERE, base::Bind(&UIApplicationLoader::OnApplicationErrorOnUIThread,
-                            base::Unretained(this), manager, url));
-}
-
-void UIApplicationLoader::LoadOnUIThread(ApplicationManager* manager,
-                                         const GURL& url,
-                                         ScopedMessagePipeHandle shell_handle) {
-  loader_->Load(manager, url, shell_handle.Pass(), SimpleLoadCallback());
-}
-
-void UIApplicationLoader::OnApplicationErrorOnUIThread(
-    ApplicationManager* manager,
-    const GURL& url) {
-  loader_->OnApplicationError(manager, url);
-}
-
-void UIApplicationLoader::ShutdownOnUIThread() {
-  // Destroy |loader_| on the thread it's actually used on.
-  loader_.reset();
-}
-
-}  // namespace mojo