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

content/public/renderer/content_renderer_client.h

Index: content/public/renderer/content_renderer_client.h
diff --git a/content/public/renderer/content_renderer_client.h b/content/public/renderer/content_renderer_client.h
index 241d95b535d65e592f5c9c4bb5faa36588d9b09c..af121a5a5faf9afa8689e531459003070d4888ac 100644
--- a/content/public/renderer/content_renderer_client.h
+++ b/content/public/renderer/content_renderer_client.h
@@ -320,6 +320,10 @@ class CONTENT_EXPORT ContentRendererClient {
   // Whether this renderer should enforce preferences related to the WebRTC
   // routing logic, i.e. allowing multiple routes and non-proxied UDP.
   virtual bool ShouldEnforceWebRTCRoutingPreferences();
+
+  // Returns the public key to be used for origin trials, or an empty srting if

[chasej, 2016/02/10 05:24:23]

Typo, should be "string", not "srting"

[iclelland, 2016/02/10 20:31:00]

Done.

+  // origin trials are not enabled in this context.
+  virtual base::StringPiece GetOriginTrialPublicKey();
 };
 
 }  // namespace content