Revert of Provide WebContents::CreateParams to tab helpers.

chrome/browser/ui/tab_helpers.h

 // Copyright 2014 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 CHROME_BROWSER_UI_TAB_HELPERS_H_
 #define CHROME_BROWSER_UI_TAB_HELPERS_H_
 
-#include "base/optional.h"
-#include "content/public/browser/web_contents.h"
-
 namespace android {
 class TabWebContentsDelegateAndroid;
 }
 
+namespace content {
+class WebContents;
+}
+
 namespace chrome {
 class BrowserTabStripModelDelegate;
 }
 
 namespace prerender {
 class PrerenderContents;
 }
 
 // A "tab contents" is a WebContents that is used as a tab in a browser window
 // (or the equivalent on Android). The TabHelpers class allows specific classes
@@ skipping 27 matching lines @@
   friend class prerender::PrerenderContents;
 
   // FYI: Do NOT add any more friends here. The functions above are the ONLY
   // ones that need to call AttachTabHelpers; if you think you do, re-read the
   // design document linked above, especially the section "Reusing tab helpers".
 
   // Adopts the specified WebContents as a full-fledged browser tab, attaching
   // all the associated tab helpers that are needed for the WebContents to
   // serve in that role. It is safe to call this on a WebContents that was
   // already adopted.
-  static void AttachTabHelpers(
-      content::WebContents* web_contents,
-      const base::Optional<content::WebContents::CreateParams>& create_params);
+  static void AttachTabHelpers(content::WebContents* web_contents);
 };
 
 #endif  // CHROME_BROWSER_UI_TAB_HELPERS_H_