refactor to Introduce AUDIO_CAPTURE and VIDEO_CAPTURE permissions.

chrome/browser/media/media_stream_device_permission_context.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 CHROME_BROWSER_MEDIA_MEDIA_STREAM_DEVICE_PERMISSION_CONTEXT_H_
+#define CHROME_BROWSER_MEDIA_MEDIA_STREAM_DEVICE_PERMISSION_CONTEXT_H_
+
+#include "base/macros.h"
+#include "chrome/browser/permissions/permission_context_base.h"
+#include "components/content_settings/core/common/content_settings_types.h"
+
+// Common class which handles the mic and camera permissions.
+// MediaStreamMicPermissionContextFactory and
+// MediaStreamCameraPermissionContextFactory will instantiate this with
+// corresponding |permission_type|.
+class MediaStreamDevicePermissionContext : public PermissionContextBase {
+ public:
+  MediaStreamDevicePermissionContext(
+      Profile* profile,
+      const ContentSettingsType content_settings_type);
+  ~MediaStreamDevicePermissionContext() override;
+
+  // PermissionContextBase:
+  void RequestPermission(content::WebContents* web_contents,
+                         const PermissionRequestID& id,
+                         const GURL& requesting_frame,
+                         bool user_gesture,
+                         const BrowserPermissionCallback& callback) override;
+
+  // TODO(xhwang): GURL.GetOrigin() shouldn't be used as the origin. Need to
+  // refactor to use url::Origin. crbug.com/527149 is filed for this.
+  ContentSetting GetPermissionStatus(
+      const GURL& requesting_origin,
+      const GURL& embedding_origin) const override;
+
+  void ResetPermission(const GURL& requesting_origin,
+                       const GURL& embedding_origin) override;
+
+  void CancelPermissionRequest(content::WebContents* web_contents,
+                               const PermissionRequestID& id) override;
+
+ private:
+  // PermissionContextBase:
+  bool IsRestrictedToSecureOrigins() const override;
+
+  ContentSettingsType content_settings_type_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaStreamDevicePermissionContext);
+};
+
+#endif  // CHROME_BROWSER_MEDIA_MEDIA_STREAM_DEVICE_PERMISSION_CONTEXT_H_