Convert StartPageService and ZoomController to use the new navigation callbacks.

components/zoom/zoom_controller.h

 // Copyright (c) 2012 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 COMPONENTS_ZOOM_ZOOM_CONTROLLER_H_
 #define COMPONENTS_ZOOM_ZOOM_CONTROLLER_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
@@ skipping 131 matching lines @@
       const scoped_refptr<const ZoomRequestClient>& client);
 
   // Sets the zoom mode, which defines zoom behavior (see enum ZoomMode).
   void SetZoomMode(ZoomMode zoom_mode);
 
   // Set and query whether or not the page scale factor is one.
   void SetPageScaleFactorIsOneForTesting(bool is_one);
   bool PageScaleFactorIsOne() const;
 
   // content::WebContentsObserver overrides:
-  void DidNavigateMainFrame(
-      const content::LoadCommittedDetails& details,
-      const content::FrameNavigateParams& params) override;
+  void DidFinishNavigation(
+      content::NavigationHandle* navigation_handle) override;
   void WebContentsDestroyed() override;
   void RenderFrameHostChanged(content::RenderFrameHost* old_host,
                               content::RenderFrameHost* new_host) override;
 
  protected:
   // Protected for testing.
   explicit ZoomController(content::WebContents* web_contents);
 
  private:
   friend class content::WebContentsUserData<ZoomController>;
@@ skipping 31 matching lines @@
   content::HostZoomMap* host_zoom_map_;
 
   std::unique_ptr<content::HostZoomMap::Subscription> zoom_subscription_;
 
   DISALLOW_COPY_AND_ASSIGN(ZoomController);
 };
 
 }  // namespace zoom
 
 #endif  // COMPONENTS_ZOOM_ZOOM_CONTROLLER_H_