Mac: Give app_shim code a nicer home

apps/app_shim/app_shim_handler_mac.h

-// 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.
-
-#ifndef APPS_APP_SHIM_APP_SHIM_HANDLER_MAC_H_
-#define APPS_APP_SHIM_APP_SHIM_HANDLER_MAC_H_
-
-#include <string>
-#include <vector>
-
-#include "apps/app_shim/app_shim_launch.h"
-#include "base/files/file_path.h"
-
-namespace apps {
-
-// Registrar, and interface for services that can handle interactions with OSX
-// shim processes.
-class AppShimHandler {
- public:
-  class Host {
-   public:
-    // Invoked when the app is successfully launched.
-    virtual void OnAppLaunchComplete(AppShimLaunchResult result) = 0;
-    // Invoked when the app is closed in the browser process.
-    virtual void OnAppClosed() = 0;
-    // Invoked when the app should be hidden.
-    virtual void OnAppHide() = 0;
-    // Invoked when the app is requesting user attention.
-    virtual void OnAppRequestUserAttention(AppShimAttentionType type) = 0;
-
-    // Allows the handler to determine which app this host corresponds to.
-    virtual base::FilePath GetProfilePath() const = 0;
-    virtual std::string GetAppId() const = 0;
-
-   protected:
-    virtual ~Host() {}
-  };
-
-  // Register a handler for an |app_mode_id|.
-  static void RegisterHandler(const std::string& app_mode_id,
-                              AppShimHandler* handler);
-
-  // Remove a handler for an |app_mode_id|.
-  static void RemoveHandler(const std::string& app_mode_id);
-
-  // Returns the handler registered for the given |app_mode_id|. If there is
-  // none registered, it returns the default handler or NULL if there is no
-  // default handler.
-  static AppShimHandler* GetForAppMode(const std::string& app_mode_id);
-
-  // Sets the default handler to return when there is no app-specific handler.
-  // Setting this to NULL removes the default handler.
-  static void SetDefaultHandler(AppShimHandler* handler);
-
-  // Terminate Chrome if a browser window has never been opened, there are no
-  // shell windows, and the app list is not visible.
-  static void MaybeTerminate();
-
-  // Whether browser sessions should be restored right now. This is true if
-  // the browser has been quit but kept alive because Chrome Apps are still
-  // running.
-  static bool ShouldRestoreSession();
-
-  // Invoked by the shim host when the shim process is launched. The handler
-  // must call OnAppLaunchComplete to inform the shim of the result.
-  // |launch_type| indicates the type of launch.
-  // |files|, if non-empty, holds an array of files paths given as arguments, or
-  // dragged onto the app bundle or dock icon.
-  virtual void OnShimLaunch(Host* host,
-                            AppShimLaunchType launch_type,
-                            const std::vector<base::FilePath>& files) = 0;
-
-  // Invoked by the shim host when the connection to the shim process is closed.
-  virtual void OnShimClose(Host* host) = 0;
-
-  // Invoked by the shim host when the shim process receives a focus event.
-  // |files|, if non-empty, holds an array of files dragged onto the app bundle
-  // or dock icon.
-  virtual void OnShimFocus(Host* host,
-                           AppShimFocusType focus_type,
-                           const std::vector<base::FilePath>& files) = 0;
-
-  // Invoked by the shim host when the shim process is hidden or shown.
-  virtual void OnShimSetHidden(Host* host, bool hidden) = 0;
-
-  // Invoked by the shim host when the shim process receives a quit event.
-  virtual void OnShimQuit(Host* host) = 0;
-
- protected:
-  AppShimHandler() {}
-  virtual ~AppShimHandler() {}
-};
-
-}  // namespace apps
-
-#endif  // APPS_APP_SHIM_APP_SHIM_HANDLER_MAC_H_