Remove grow box rect support, browser part.

services/navigation/view_impl.h

 // Copyright 2016 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 SERVICES_NAVIGATION_VIEW_IMPL_H_
 #define SERVICES_NAVIGATION_VIEW_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 32 matching lines @@
   // mojom::View:
   void NavigateTo(const GURL& url) override;
   void GoBack() override;
   void GoForward() override;
   void NavigateToOffset(int offset) override;
   void Reload(bool skip_cache) override;
   void Stop() override;
   void GetWindowTreeClient(ui::mojom::WindowTreeClientRequest request) override;
   void ShowInterstitial(const mojo::String& html) override;
   void HideInterstitial() override;
-  void SetResizerSize(const gfx::Size& size) override;
 
   // content::WebContentsDelegate:
   void AddNewContents(content::WebContents* source,
                       content::WebContents* new_contents,
                       WindowOpenDisposition disposition,
                       const gfx::Rect& initial_rect,
                       bool user_gesture,
                       bool* was_blocked) override;
   void CloseContents(content::WebContents* source) override;
   content::WebContents* OpenURLFromTab(
       content::WebContents* source,
       const content::OpenURLParams& params) override;
   void LoadingStateChanged(content::WebContents* source,
                            bool to_different_document) override;
   void NavigationStateChanged(content::WebContents* source,
                               content::InvalidateTypes changed_flags) override;
   void LoadProgressChanged(content::WebContents* source,
                            double progress) override;
   void UpdateTargetURL(content::WebContents* source, const GURL& url) override;
-  gfx::Rect GetRootWindowResizerRect() const override;
 
   // content::NotificationObserver:
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
   // ui::WindowTreeClientDelegate:
   void OnEmbed(ui::Window* root) override;
   void OnEmbedRootDestroyed(ui::Window* root) override;
   void OnLostConnection(ui::WindowTreeClient* client) override;
@@ skipping 12 matching lines @@
   std::unique_ptr<ui::WindowTreeClient> window_tree_client_;
 
   views::WebView* web_view_;
 
   std::unique_ptr<content::WebContents> web_contents_;
 
   content::NotificationRegistrar registrar_;
 
   std::unique_ptr<views::Widget> widget_;
 
-  gfx::Size resizer_size_;
-
   DISALLOW_COPY_AND_ASSIGN(ViewImpl);
 };
 
 }  // navigation
 
 #endif  // SERVICES_NAVIGATION_VIEW_IMPL_H_