add "always allow" option to the mediastream infobar and allow user to allow/not allow acces to devi

chrome/browser/media/media_stream_devices_controller.h

+// Copyright (c) 2012 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 CHROME_BROWSER_MEDIA_MEDIA_STREAM_DEVICES_CONTROLLER_H_
+#define CHROME_BROWSER_MEDIA_MEDIA_STREAM_DEVICES_CONTROLLER_H_
+#pragma once
+
+#include <string>
+
+#include "content/public/browser/web_contents_delegate.h"
+
+class GURL;
+class Profile;
+
+class MediaStreamDevicesController {
+ public:
+  MediaStreamDevicesController(Profile* profile,
+                               const content::MediaStreamRequest* request,
+                               const content::MediaResponseCallback& callback);
+
+  virtual ~MediaStreamDevicesController();
+
+  // Public method to be called before creating the MediaStreamInfoBarDelegate.
+  // This function will check the content settings exceptions and take the
+  // corresponding action on exception which matches the request.
+  bool DismissInfoBarAndTakeActionOnSettings();
+
+  // Public methods to be called by MediaStreamInfoBarDelegate;
+  bool has_audio() const { return has_audio_; }
+  bool has_video() const { return has_video_; }
+  content::MediaStreamDevices GetAudioDevices() const;
+  content::MediaStreamDevices GetVideoDevices() const;
+  const GURL& GetSecurityOrigin() const;
+  void Accept(const std::string& audio_id,
+              const std::string& video_id,
+              bool always_allow);
+  void Deny();
+
+ private:
+  // Finds a device in the current request with the specified |id| and |type|,
+  // adds it to the |devices| array and also return the name of the device.
+  void AddDeviceWithId(content::MediaStreamDeviceType type,
+                       const std::string& id,
+                       content::MediaStreamDevices* devices,
+                       std::string* device_name);
+
+  // Returns true if the media section in content settings is set to
+  // |CONTENT_SETTING_BLOCK|, otherwise returns false.
+  bool IsMediaDeviceBlocked();
+
+  // Returns true if request's origin is from internal objects like
+  // chrome://URLs, otherwise returns false.
+  bool ShouldAlwaysAllowOrigin();
+
+  // Grants "always allow" exception for the origin to use the selected devices.
+  void AlwaysAllowOriginAndDevices(const std::string& audio_device,
+                                   const std::string& video_device);
+
+  // Gets the respective "always allowed" devices for the origin in |request_|.
+  // |audio_id| and |video_id| will be empty if there is no "always allowed"
+  // device for the origin, or any of the devices is not listed on the devices
+  // list in |request_|.
+  void GetAlwaysAllowedDevices(std::string* audio_id,
+                               std::string* video_id);
+
+  std::string GetDeviceIdByName(content::MediaStreamDeviceType type,
+                                const std::string& name);
+
+  std::string GetFirstDeviceId(content::MediaStreamDeviceType type);
+
+  bool has_audio_;
+  bool has_video_;
+
+  // The owner of this class needs to make sure it does not outlive the profile.
+  Profile* profile_;
+
+  // The original request for access to devices.
+  const content::MediaStreamRequest* request_;
+
+  // The callback that needs to be Run to notify WebRTC of whether access to
+  // audio/video devices was granted or not.
+  content::MediaResponseCallback callback_;
+  DISALLOW_COPY_AND_ASSIGN(MediaStreamDevicesController);
+};
+
+#endif  // CHROME_BROWSER_MEDIA_MEDIA_STREAM_DEVICES_CONTROLLER_H_