Update {virtual,override} to follow C++11 style in chrome.

chrome/browser/ui/views/frame/browser_desktop_window_tree_host_win.cc

 // 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.
 
 #include "chrome/browser/ui/views/frame/browser_desktop_window_tree_host_win.h"
 
 #include <dwmapi.h>
 
 #include "base/process/process_handle.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
@@ skipping 23 matching lines @@
 
 // DesktopThemeProvider maps resource ids using MapThemeImage(). This is
 // necessary for BrowserDesktopWindowTreeHostWin so that it uses the windows
 // theme images rather than the ash theme images.
 class DesktopThemeProvider : public ui::ThemeProvider {
  public:
   explicit DesktopThemeProvider(ui::ThemeProvider* delegate)
       : delegate_(delegate) {
   }
 
-  virtual bool UsingSystemTheme() const override {
+  bool UsingSystemTheme() const override {
     return delegate_->UsingSystemTheme();
   }
-  virtual gfx::ImageSkia* GetImageSkiaNamed(int id) const override {
+  gfx::ImageSkia* GetImageSkiaNamed(int id) const override {
     return delegate_->GetImageSkiaNamed(
         chrome::MapThemeImage(chrome::HOST_DESKTOP_TYPE_NATIVE, id));
   }
-  virtual SkColor GetColor(int id) const override {
+  SkColor GetColor(int id) const override {
     return delegate_->GetColor(id);
   }
-  virtual int GetDisplayProperty(int id) const override {
+  int GetDisplayProperty(int id) const override {
     return delegate_->GetDisplayProperty(id);
   }
-  virtual bool ShouldUseNativeFrame() const override {
+  bool ShouldUseNativeFrame() const override {
     return delegate_->ShouldUseNativeFrame();
   }
-  virtual bool HasCustomImage(int id) const override {
+  bool HasCustomImage(int id) const override {
     return delegate_->HasCustomImage(
         chrome::MapThemeImage(chrome::HOST_DESKTOP_TYPE_NATIVE, id));
   }
-  virtual base::RefCountedMemory* GetRawData(
+  base::RefCountedMemory* GetRawData(
       int id,
       ui::ScaleFactor scale_factor) const override {
     return delegate_->GetRawData(id, scale_factor);
   }
 
  private:
   ui::ThemeProvider* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopThemeProvider);
 };
@@ skipping 280 matching lines @@
     BrowserDesktopWindowTreeHost::CreateBrowserDesktopWindowTreeHost(
         views::internal::NativeWidgetDelegate* native_widget_delegate,
         views::DesktopNativeWidgetAura* desktop_native_widget_aura,
         BrowserView* browser_view,
         BrowserFrame* browser_frame) {
   return new BrowserDesktopWindowTreeHostWin(native_widget_delegate,
                                              desktop_native_widget_aura,
                                              browser_view,
                                              browser_frame);
 }