browser: implement multiple permission requesting

chrome/browser/permissions/permission_manager.h

Index: chrome/browser/permissions/permission_manager.h
diff --git a/chrome/browser/permissions/permission_manager.h b/chrome/browser/permissions/permission_manager.h
index 118bd3f91f67b78d382ede87a215cd3bfc263fef..e5696590e0b8eaf00985d1130e7256c4f09d3e1e 100644
--- a/chrome/browser/permissions/permission_manager.h
+++ b/chrome/browser/permissions/permission_manager.h
@@ -35,7 +35,15 @@ class PermissionManager : public KeyedService,
       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(int request_id) override;
   void ResetPermission(content::PermissionType permission,
                        const GURL& requesting_origin,
@@ -61,10 +69,14 @@ class PermissionManager : public KeyedService,
   struct Subscription;
   using SubscriptionsMap = IDMap<Subscription, IDMapOwnPointer>;
 
-  void OnPermissionRequestResponse(
+  void OnPermissionsRequestResponse(
       int request_id,
-      const base::Callback<void(content::PermissionStatus)>& callback,
+      int request_index,
       ContentSetting content_setting);
+  void OnPermissionsRequestResponseStatus(
+      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.