Fix in LayoutTestPermissionManager::RequestPermissions

content/shell/browser/layout_test/layout_test_permission_manager.cc

 // 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.
 
 #include "content/shell/browser/layout_test/layout_test_permission_manager.h"
 
 #include <list>
 #include <memory>
 #include <utility>
 
@@ skipping 70 matching lines @@
 
 int LayoutTestPermissionManager::RequestPermissions(
     const std::vector<PermissionType>& permissions,
     content::RenderFrameHost* render_frame_host,
     const GURL& requesting_origin,
     bool user_gesture,
     const base::Callback<
         void(const std::vector<blink::mojom::PermissionStatus>&)>& callback) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
-  std::vector<blink::mojom::PermissionStatus> result(permissions.size());
+  std::vector<blink::mojom::PermissionStatus> result;
+  result.reserve(permissions.size());
   const GURL& embedding_origin =
       WebContents::FromRenderFrameHost(render_frame_host)
           ->GetLastCommittedURL().GetOrigin();
   for (const auto& permission : permissions) {
     result.push_back(GetPermissionStatus(
         permission, requesting_origin, embedding_origin));
   }
 
   callback.Run(result);
   return kNoPendingOperation;
@@ skipping 110 matching lines @@
     // Add the callback to |callbacks| which will be run after the loop to
     // prevent re-entrance issues.
     callbacks.push_back(base::Bind(subscription->callback, status));
   }
 
   for (const auto& callback : callbacks)
     callback.Run();
 }
 
 }  // namespace content