Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/api/page_capture/page_capture_api.h

 // Copyright (c) 2012 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_PAGE_CAPTURE_PAGE_CAPTURE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_PAGE_CAPTURE_PAGE_CAPTURE_API_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 38 matching lines @@
   void TemporaryFileCreated(bool success);
   void ReturnFailure(const std::string& error);
   void ReturnSuccess(int64_t file_size);
 
   // Callback called once the MHTML generation is done.
   void MHTMLGenerated(int64_t mhtml_file_size);
 
   // Returns the WebContents we are associated with, NULL if it's been closed.
   content::WebContents* GetWebContents();
 
-  scoped_ptr<extensions::api::page_capture::SaveAsMHTML::Params> params_;
+  std::unique_ptr<extensions::api::page_capture::SaveAsMHTML::Params> params_;
 
   // The path to the temporary file containing the MHTML data.
   base::FilePath mhtml_path_;
 
   // The file containing the MHTML.
   scoped_refptr<storage::ShareableFileReference> mhtml_file_;
 
   DECLARE_EXTENSION_FUNCTION("pageCapture.saveAsMHTML", PAGECAPTURE_SAVEASMHTML)
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_PAGE_CAPTURE_PAGE_CAPTURE_API_H_