Update JSONReader to take base::StringPiece instead of std::string

chrome/browser/plugin_finder.cc

 // 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.
 
 #include "chrome/browser/plugin_finder.h"
 
 #include "base/bind.h"
 #include "base/json/json_reader.h"
 #include "base/message_loop.h"
 #include "base/stl_util.h"
@@ skipping 30 matching lines @@
 }
 
 // static
 DictionaryValue* PluginFinder::LoadPluginList() {
 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX)
   base::StringPiece json_resource(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_PLUGIN_DB_JSON, ui::SCALE_FACTOR_NONE));
   std::string error_str;
   scoped_ptr<base::Value> value(base::JSONReader::ReadAndReturnError(
-      json_resource.as_string(),
+      json_resource,
       base::JSON_PARSE_RFC,
       NULL,
       &error_str));
   if (!value.get()) {
     DLOG(ERROR) << error_str;
     return NULL;
   }
   if (value->GetType() != base::Value::TYPE_DICTIONARY)
     return NULL;
   return static_cast<base::DictionaryValue*>(value.release());
@@ skipping 94 matching lines @@
           PluginInstaller::SECURITY_STATUS_UP_TO_DATE;
       success = PluginInstaller::ParseSecurityStatus(status_str, &status);
       DCHECK(success);
       installer->AddVersion(Version(version), status);
     }
   }
 
   installers_[identifier] = installer;
   return installer;
 }