mash: Move system tray cast code into //ash/common

ash/cast_config_delegate.h

-// Copyright 2015 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 ASH_CAST_CONFIG_DELEGATE_H_
-#define ASH_CAST_CONFIG_DELEGATE_H_
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "ash/ash_export.h"
-#include "base/macros.h"
-#include "base/strings/string16.h"
-#include "url/gurl.h"
-
-namespace ash {
-
-// This delegate allows the UI code in ash, e.g. |TrayCastDetailedView|,
-// to access the cast extension.
-class CastConfigDelegate {
- public:
-  struct ASH_EXPORT Receiver {
-    Receiver();
-    ~Receiver();
-
-    std::string id;
-    base::string16 name;
-  };
-
-  struct ASH_EXPORT Activity {
-    // The tab identifier that we are casting. These are the special tab values
-    // taken from the chromecast extension itself. If an actual tab is being
-    // casted, then the TabId will be >= 0.
-    enum TabId {
-      EXTENSION = -1,
-      DESKTOP = -2,
-      DISCOVERED_ACTIVITY = -3,
-      EXTERNAL_EXTENSION_CLIENT = -4,
-
-      // Not in the extension. Used when the extension does not give us a tabId
-      // (ie, the cast is running from another device).
-      UNKNOWN = -5
-    };
-
-    Activity();
-    ~Activity();
-
-    std::string id;
-    base::string16 title;
-
-    // Is the activity source this computer? ie, are we mirroring the display?
-    bool is_local_source = false;
-
-    // The id for the tab we are casting. Could be one of the TabId values,
-    // or a value >= 0 that represents that tab index of the tab we are
-    // casting. We default to casting the desktop, as a tab may not
-    // necessarily exist.
-    // TODO(jdufault): Remove tab_id once the CastConfigDelegateChromeos is
-    // gone. See crbug.com/551132.
-    int tab_id = TabId::DESKTOP;
-  };
-
-  struct ASH_EXPORT ReceiverAndActivity {
-    ReceiverAndActivity();
-    ~ReceiverAndActivity();
-
-    Receiver receiver;
-    Activity activity;
-  };
-
-  using ReceiversAndActivities = std::vector<ReceiverAndActivity>;
-
-  class ASH_EXPORT Observer {
-   public:
-    // Invoked whenever there is new receiver or activity information available.
-    virtual void OnDevicesUpdated(const ReceiversAndActivities& devices) = 0;
-
-   protected:
-    virtual ~Observer() {}
-
-   private:
-    DISALLOW_ASSIGN(Observer);
-  };
-
-  virtual ~CastConfigDelegate() {}
-
-  // Returns true if cast extension is installed.
-  // TODO(jdufault): Remove this function once the CastConfigDelegateChromeos is
-  // gone. See crbug.com/551132.
-  virtual bool HasCastExtension() const = 0;
-
-  // Request fresh data from the backend. When the data is available, all
-  // registered observers will get called.
-  virtual void RequestDeviceRefresh() = 0;
-
-  // Cast to a receiver specified by |receiver_id|.
-  virtual void CastToReceiver(const std::string& receiver_id) = 0;
-
-  // Stop an ongoing cast (this should be a user initiated stop). |activity_id|
-  // is the identifier of the activity/route that should be stopped.
-  virtual void StopCasting(const std::string& activity_id) = 0;
-
-  // Does the device have a settings page?
-  // TODO(jdufault): Remove this function once the CastConfigDelegateChromeos is
-  // gone. See crbug.com/551132.
-  virtual bool HasOptions() const = 0;
-
-  // Opens Options page for cast.
-  // TODO(jdufault): Remove this function once the CastConfigDelegateChromeos is
-  // gone. See crbug.com/551132.
-  virtual void LaunchCastOptions() = 0;
-
-  // Add or remove an observer.
-  virtual void AddObserver(Observer* observer) = 0;
-  virtual void RemoveObserver(Observer* observer) = 0;
-
- private:
-  DISALLOW_ASSIGN(CastConfigDelegate);
-};
-
-}  // namespace ash
-
-#endif  // ASH_CAST_CONFIG_DELEGATE_H_