Fix scroll restoration when exiting fullscreen mode.

ui/views/controls/webview/webview.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 UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_
 #define UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
@@ skipping 115 matching lines @@
   bool EmbedsFullscreenWidget() const override;
 
   // Overridden from content::WebContentsObserver:
   void RenderViewReady() override;
   void RenderViewDeleted(content::RenderViewHost* render_view_host) override;
   void RenderViewHostChanged(content::RenderViewHost* old_host,
                              content::RenderViewHost* new_host) override;
   void WebContentsDestroyed() override;
   void DidShowFullscreenWidget(int routing_id) override;
   void DidDestroyFullscreenWidget(int routing_id) override;
-  void DidToggleFullscreenModeForTab(bool entered_fullscreen) override;
+  void DidToggleFullscreenModeForTab(bool entered_fullscreen,
+                                     bool will_cause_resize) override;
   void DidAttachInterstitialPage() override;
   void DidDetachInterstitialPage() override;
   // Workaround for MSVC++ linker bug/feature that requires
   // instantiation of the inline IPC::Listener methods in all translation units.
   void OnChannelConnected(int32_t peer_id) override {}
   void OnChannelError() override {}
   void OnBadMessageReceived(const IPC::Message& message) override {}
   void OnWebContentsFocused() override;
 
  private:
@@ skipping 26 matching lines @@
   content::BrowserContext* browser_context_;
   bool allow_accelerators_;
   gfx::Size preferred_size_;
 
   DISALLOW_COPY_AND_ASSIGN(WebView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_