browser: implement multiple permission requesting

content/public/browser/permission_manager.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 CONTENT_PUBLIC_BROWSER_PERMISSION_MANAGER_H_
 #define CONTENT_PUBLIC_BROWSER_PERMISSION_MANAGER_H_
 
 #include "content/common/content_export.h"
 #include "content/public/common/permission_status.mojom.h"
 
@@ skipping 22 matching lines @@
   // CancelPermissionRequest). This can be kNoPendingOperation if
   // there is no further need to cancel the permission in which case |callback|
   // was invoked.
   virtual int RequestPermission(
       PermissionType permission,
       RenderFrameHost* render_frame_host,
       const GURL& requesting_origin,
       bool user_gesture,
       const base::Callback<void(PermissionStatus)>& callback) = 0;
 
-  // Cancels a previously requested permission. The given parameter must match
-  // the ones passed to the RequestPermission call.
-  virtual void CancelPermissionRequest(PermissionType permission,
-                                       RenderFrameHost* render_frame_host,
-                                       int request_id,
-                                       const GURL& requesting_origin) = 0;
+  // Requests multiple permissions on behalf of a frame identified by
+  // render_frame_host.
+  // When the permission request is handled, whether it failed, timed out or
+  // succeeded, the |callback| will be run. The order of statuses in the
+  // returned vector will correspond to the order of requested permission
+  // types.
+  // Returns a request id which can be used to cancel the request (see
+  // CancelPermissionRequest). This can be kNoPendingOperation if
+  // there is no further need to cancel the permission in which case |callback|
+  // was invoked.
+  virtual int RequestPermissions(
+      const std::vector<PermissionType>& permission,
+      RenderFrameHost* render_frame_host,
+      const GURL& requesting_origin,
+      bool user_gesture,
+      const base::Callback<void(
+          const std::vector<PermissionStatus>&)>& callback) = 0;
+
+  // Cancels a previous permission request specified by |request_id|. Cancelling
+  // an already cancelled request or providing the |request_id|
+  // kNoPendingOperation is a no-op.
+  virtual void CancelPermissionRequest(int request_id) = 0;
 
   // Returns the permission status of a given requesting_origin/embedding_origin
   // tuple. This is not taking a RenderFrameHost because the call might happen
   // outside of a frame context.
   virtual PermissionStatus GetPermissionStatus(
       PermissionType permission,
       const GURL& requesting_origin,
       const GURL& embedding_origin) = 0;
 
   // Sets the permission back to its default for the requesting_origin/
@@ skipping 22 matching lines @@
   // The |subscription_id| must match the value returned by the
   // SubscribePermissionStatusChange call. Unsubscribing
   // an already unsubscribed |subscription_id| or providing the
   // |subscription_id| kNoPendingOperation is a no-op.
   virtual void UnsubscribePermissionStatusChange(int subscription_id) = 0;
 };
 
 }  // namespace content
 
 #endif // CONTENT_PUBLIC_BROWSER_PERMISSION_MANAGER_H_