Convert //ppapi to use std::unique_ptr

ppapi/proxy/flash_font_file_resource.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 PPAPI_PROXY_FLASH_FONT_FILE_RESOURCE_H_
 #define PPAPI_PROXY_FLASH_FONT_FILE_RESOURCE_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 29 matching lines @@
                        uint32_t* output_length) override;
 
  private:
   // Sees if we have a cache of the font table and returns a pointer to it.
   // Returns NULL if we don't have it.
   const std::string* GetFontTable(uint32_t table) const;
 
   const std::string* AddFontTable(uint32_t table, const std::string& contents);
 
   using FontTableMap =
-      base::ScopedPtrHashMap<uint32_t, scoped_ptr<std::string>>;
+      base::ScopedPtrHashMap<uint32_t, std::unique_ptr<std::string>>;
   FontTableMap font_tables_;
 
   SerializedFontDescription description_;
   const PP_PrivateFontCharset charset_;
 
   DISALLOW_COPY_AND_ASSIGN(FlashFontFileResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_FLASH_FONT_FILE_RESOURCE_H_