[Experimental Framework] Move the trial token public key out of content and into the embedder.

chrome/renderer/chrome_content_renderer_client.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/renderer/chrome_content_renderer_client.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/crash_logging.h"
@@ skipping 1398 matching lines @@
 // chrome.system.network.getNetworkInterfaces provides the same
 // information. Also, the enforcement of sending and binding UDP is already done
 // by chrome extension permission model.
 bool ChromeContentRendererClient::ShouldEnforceWebRTCRoutingPreferences() {
 #if defined(ENABLE_EXTENSIONS)
   return !IsStandaloneExtensionProcess();
 #else
   return true;
 #endif
 }
+
+base::StringPiece ChromeContentRendererClient::GetOriginTrialPublicKey() {
+  return origin_trial_key_manager_.GetPublicKey();
+}