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

content/shell/renderer/shell_content_renderer_client.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 CONTENT_SHELL_RENDERER_SHELL_CONTENT_RENDERER_CLIENT_H_
 #define CONTENT_SHELL_RENDERER_SHELL_CONTENT_RENDERER_CLIENT_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/renderer/content_renderer_client.h"
@@ skipping 11 matching lines @@
 
   // ContentRendererClient implementation.
   void RenderThreadStarted() override;
   void RenderViewCreated(RenderView* render_view) override;
 
   // TODO(mkwst): These toggle based on the kEnablePepperTesting flag. Do we
   // need that outside of layout tests?
   bool IsPluginAllowedToUseCompositorAPI(const GURL& url) override;
   bool IsPluginAllowedToUseDevChannelAPIs() override;
 
+  base::StringPiece GetOriginTrialPublicKey() override;
+
  private:
   scoped_ptr<web_cache::WebCacheRenderProcessObserver> web_cache_observer_;
+  base::StringPiece origin_trial_public_key_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_RENDERER_SHELL_CONTENT_RENDERER_CLIENT_H_