Revert of Provide WebContents::CreateParams to tab helpers.

chrome/browser/prerender/prerender_contents.h

Index: chrome/browser/prerender/prerender_contents.h
diff --git a/chrome/browser/prerender/prerender_contents.h b/chrome/browser/prerender/prerender_contents.h
index 438023c37dbdaebb2a99ff25ab2150435481b592..ccddb5ac35ee367b8867c128038ed4192525fe78 100644
--- a/chrome/browser/prerender/prerender_contents.h
+++ b/chrome/browser/prerender/prerender_contents.h
@@ -23,7 +23,6 @@
 #include "chrome/common/prerender_types.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
-#include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/common/referrer.h"
 #include "mojo/public/cpp/bindings/binding.h"
@@ -39,6 +38,7 @@
 namespace content {
 class RenderViewHost;
 class SessionStorageNamespace;
+class WebContents;
 }
 
 namespace history {
@@ -281,7 +281,6 @@
   }
 
   content::WebContents* CreateWebContents(
-      const content::WebContents::CreateParams& create_params,
       content::SessionStorageNamespace* session_storage_namespace);
 
   PrerenderMode prerender_mode_;