browser: implement multiple permission requesting

chrome/browser/permissions/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 CHROME_BROWSER_PERMISSIONS_PERMISSION_MANAGER_H_
 #define CHROME_BROWSER_PERMISSIONS_PERMISSION_MANAGER_H_
 
 #include "base/callback_forward.h"
 #include "base/id_map.h"
 #include "base/macros.h"
@@ skipping 17 matching lines @@
  public:
   explicit PermissionManager(Profile* profile);
   ~PermissionManager() override;
 
   // content::PermissionManager implementation.
   int RequestPermission(
       content::PermissionType permission,
       content::RenderFrameHost* render_frame_host,
       const GURL& requesting_origin,
       bool user_gesture,
-      const base::Callback<void(content::PermissionStatus)>& callback) override;
+      const base::Callback<void(
+          content::PermissionStatus)>& callback) override;
+  int RequestPermissions(
+      const std::vector<content::PermissionType>& permissions,
+      content::RenderFrameHost* render_frame_host,
+      const GURL& requesting_origin,
+      bool user_gesture,
+      const base::Callback<void(
+          const std::vector<content::PermissionStatus>&)>& callback) override;
   void CancelPermissionRequest(content::RenderFrameHost* render_frame_host,
-                               int request_id) override;
+                                int request_id) override;
   void ResetPermission(content::PermissionType permission,
                        const GURL& requesting_origin,
                        const GURL& embedding_origin) override;
   content::PermissionStatus GetPermissionStatus(
       content::PermissionType permission,
       const GURL& requesting_origin,
       const GURL& embedding_origin) override;
   void RegisterPermissionUsage(content::PermissionType permission,
                                const GURL& requesting_origin,
                                const GURL& embedding_origin) override;
   int SubscribePermissionStatusChange(
       content::PermissionType permission,
       const GURL& requesting_origin,
       const GURL& embedding_origin,
       const base::Callback<void(content::PermissionStatus)>& callback) override;
   void UnsubscribePermissionStatusChange(int subscription_id) override;
 
  private:
   struct PendingRequest;
   using PendingRequestsMap = IDMap<PendingRequest, IDMapOwnPointer>;
 
   struct Subscription;
   using SubscriptionsMap = IDMap<Subscription, IDMapOwnPointer>;
 
+  int RequestPermissionsInternal(
+      const std::vector<content::PermissionType>& permissions,
+      content::RenderFrameHost* render_frame_host,
+      const GURL& requesting_origin,
+      bool user_gesture,
+      const base::Callback<void(
+            const std::vector<content::PermissionStatus>&)>& callback);
+
   void OnPermissionRequestResponse(
       int request_id,
-      const base::Callback<void(content::PermissionStatus)>& callback,
+      int request_index,
       ContentSetting content_setting);
 
+  void OnPermissionRequestResponseInternal(
+      int request_id,
+      int request_index,
+      content::PermissionStatus status);
+
   // Not all WebContents are able to display permission requests. If the PBM
   // is required but missing for |web_contents|, don't pass along the request.
   bool IsPermissionBubbleManagerMissing(content::WebContents* web_contents);
 
   // content_settings::Observer implementation.
   void OnContentSettingChanged(const ContentSettingsPattern& primary_pattern,
                                const ContentSettingsPattern& secondary_pattern,
                                ContentSettingsType content_type,
                                std::string resource_identifier) override;
 
   Profile* profile_;
   PendingRequestsMap pending_requests_;
   SubscriptionsMap subscriptions_;
 
   base::WeakPtrFactory<PermissionManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionManager);
 };
 
 #endif // CHROME_BROWSER_PERMISSIONS_PERMISSION_MANAGER_H_