Revert of Provide WebContents::CreateParams to tab helpers.

chrome/browser/page_load_metrics/metrics_web_contents_observer.h

 // Copyright 2015 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_PAGE_LOAD_METRICS_METRICS_WEB_CONTENTS_OBSERVER_H_
 #define CHROME_BROWSER_PAGE_LOAD_METRICS_METRICS_WEB_CONTENTS_OBSERVER_H_
 
 #include <map>
 #include <memory>
 #include <vector>
@@ skipping 58 matching lines @@
 
    private:
     page_load_metrics::MetricsWebContentsObserver* observer_;
 
     DISALLOW_COPY_AND_ASSIGN(TestingObserver);
   };
 
   // Note that the returned metrics is owned by the web contents.
   static MetricsWebContentsObserver* CreateForWebContents(
       content::WebContents* web_contents,
-      const base::Optional<content::WebContents::CreateParams>& create_params,
       std::unique_ptr<PageLoadMetricsEmbedderInterface> embedder_interface);
   MetricsWebContentsObserver(
       content::WebContents* web_contents,
-      const base::Optional<content::WebContents::CreateParams>& create_params,
       std::unique_ptr<PageLoadMetricsEmbedderInterface> embedder_interface);
   ~MetricsWebContentsObserver() override;
 
   // content::WebContentsObserver implementation:
   bool OnMessageReceived(const IPC::Message& message,
                          content::RenderFrameHost* render_frame_host) override;
   void DidFinishNavigation(
       content::NavigationHandle* navigation_handle) override;
   void DidRedirectNavigation(
       content::NavigationHandle* navigation_handle) override;
@@ skipping 139 matching lines @@
   base::ObserverList<TestingObserver> testing_observers_;
   content::WebContentsFrameBindingSet<mojom::PageLoadMetrics>
       page_load_metrics_binding_;
 
   DISALLOW_COPY_AND_ASSIGN(MetricsWebContentsObserver);
 };
 
 }  // namespace page_load_metrics
 
 #endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_METRICS_WEB_CONTENTS_OBSERVER_H_