Convert //tools to use std::unique_ptr

chrome/browser/extensions/api/developer_private/extension_info_generator.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_EXTENSIONS_API_DEVELOPER_PRIVATE_EXTENSION_INFO_GENERATOR_H_
 #define CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_EXTENSION_INFO_GENERATOR_H_
 
 #include <stddef.h>
 
+#include <memory>
+
 #include "base/callback.h"
 #include "base/macros.h"
-#include "base/memory/linked_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/common/extensions/api/developer_private.h"
 
 namespace content {
 class BrowserContext;
 }
 
 namespace gfx {
 class Image;
 }
@@ skipping 75 matching lines @@
   ExtensionInfosCallback callback_;
 
   base::WeakPtrFactory<ExtensionInfoGenerator> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionInfoGenerator);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_EXTENSION_INFO_GENERATOR_H_