Move trial token code to content/common.

chrome/renderer/chrome_content_renderer_client.h

Index: chrome/renderer/chrome_content_renderer_client.h
diff --git a/chrome/renderer/chrome_content_renderer_client.h b/chrome/renderer/chrome_content_renderer_client.h
index c56c2bbd35b9ba3a2ea392a045f7cf2025c7a504..97ee06012911cf16c5f7c2ab7e74d5f0bb520bb8 100644
--- a/chrome/renderer/chrome_content_renderer_client.h
+++ b/chrome/renderer/chrome_content_renderer_client.h
@@ -16,7 +16,6 @@
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
-#include "chrome/renderer/origin_trials/origin_trial_key_manager.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "v8/include/v8.h"
@@ -153,7 +152,6 @@ class ChromeContentRendererClient : public content::ContentRendererClient {
       v8::Local<v8::Context> context,
       const GURL& url) override;
   bool ShouldEnforceWebRTCRoutingPreferences() override;
-  base::StringPiece GetOriginTrialPublicKey() override;
 
 #if defined(ENABLE_SPELLCHECK)
   // Sets a new |spellcheck|. Used for testing only.
@@ -202,8 +200,6 @@ class ChromeContentRendererClient : public content::ContentRendererClient {
   scoped_ptr<network_hints::PrescientNetworkingDispatcher>
       prescient_networking_dispatcher_;
 
-  OriginTrialKeyManager origin_trial_key_manager_;
-
 #if defined(ENABLE_SPELLCHECK)
   scoped_ptr<SpellCheck> spellcheck_;
 #endif