Fix a bunch of IWYU violators that don't include scoped_ptr.h

chrome/common/component_flash_hint_file_linux.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 "chrome/common/component_flash_hint_file_linux.h"
 
 #include <fcntl.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <sys/mman.h>
 
 #include "base/base64.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/important_file_writer.h"
 #include "base/files/memory_mapped_file.h"
 #include "base/files/scoped_file.h"
 #include "base/json/json_string_value_serializer.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/stl_util.h"
 #include "base/values.h"
 #include "chrome/common/chrome_paths.h"
 #include "crypto/secure_hash.h"
 #include "crypto/secure_util.h"
 #include "crypto/sha2.h"
 
 namespace component_flash_hint_file {
@@ skipping 186 matching lines @@
            "component flash plugin will not be loaded.";
     return false;
   }
 
   *path = plugin_path;
   flash_version->assign(plugin_version_str);
   return true;
 }
 
 }  // namespace component_flash_hint_file