[New Tab Page] Add Field Trial support to the Local NTP

chrome/browser/search/local_ntp_source.h

 // Copyright 2013 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_SEARCH_LOCAL_NTP_SOURCE_H_
 #define CHROME_BROWSER_SEARCH_LOCAL_NTP_SOURCE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "content/public/browser/url_data_source.h"
@@ skipping 14 matching lines @@
   virtual void StartDataRequest(
       const std::string& path,
       int render_process_id,
       int render_frame_id,
       const content::URLDataSource::GotDataCallback& callback) OVERRIDE;
   virtual std::string GetMimeType(const std::string& path) const OVERRIDE;
   virtual bool ShouldServiceRequest(
       const net::URLRequest* request) const OVERRIDE;
   virtual std::string GetContentSecurityPolicyFrameSrc() const OVERRIDE;
 
+  // Sends a local resource with a specific |class_name| substituted.
+  void SendResourceWithClass(
+    int resource_id,
+    const std::string& class_name,
+    const content::URLDataSource::GotDataCallback& callback);
+
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(LocalNtpSource);
 };
 
 #endif  // CHROME_BROWSER_SEARCH_LOCAL_NTP_SOURCE_H_