Move application_manager from /mojo to /shell.

mojo/application_manager/application_loader.h

-// 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.
-
-#ifndef MOJO_APPLICATION_MANAGER_APPLICATION_LOADER_H_
-#define MOJO_APPLICATION_MANAGER_APPLICATION_LOADER_H_
-
-#include "base/callback.h"
-#include "mojo/application_manager/application_manager_export.h"
-#include "mojo/public/cpp/system/core.h"
-#include "mojo/services/network/public/interfaces/url_loader.mojom.h"
-#include "url/gurl.h"
-
-namespace mojo {
-
-class ApplicationManager;
-
-// Interface to allowing loading behavior to be established for schemes,
-// specific urls or as the default.
-// A ApplicationLoader is responsible to using whatever mechanism is appropriate
-// to load the application at url.
-// The handle to the shell is passed to that application so it can bind it to
-// a Shell instance. This will give the Application a way to connect to other
-// apps and services.
-class MOJO_APPLICATION_MANAGER_EXPORT ApplicationLoader {
- public:
-  typedef base::Callback<
-      void(const GURL&, ScopedMessagePipeHandle, URLResponsePtr)> LoadCallback;
-  virtual ~ApplicationLoader() {}
-
-  // Returns a callback that will should never be called.
-  static LoadCallback SimpleLoadCallback();
-
-  // Load the application named |url|. Applications can be loaded two ways:
-  //
-  // 1. |url| can refer directly to a Mojo application. In this case,
-  //    shell_handle should be used to implement the mojo.Application interface.
-  //
-  // 2. |url| can refer to some content that can be handled by some other Mojo
-  //    application. In this case, call callbacks and specify the URL of the
-  //    application that should handle the content.  The specified application
-  //    must implement the mojo.ContentHandler interface.
-  virtual void Load(ApplicationManager* application_manager,
-                    const GURL& url,
-                    ScopedMessagePipeHandle shell_handle,
-                    LoadCallback callback) = 0;
-
-  // Called when the Application exits.
-  virtual void OnApplicationError(ApplicationManager* manager,
-                                  const GURL& url) = 0;
-
- protected:
-  ApplicationLoader() {}
-};
-
-}  // namespace mojo
-
-#endif  // MOJO_APPLICATION_MANAGER_APPLICATION_LOADER_H_