Add GetCaptionButtonHeightInDIPs() method

chrome/browser/ui/views/frame/browser_desktop_window_tree_host_x11.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_x11.h"
 
 #include <utility>
 
 #include "base/macros.h"
 #include "chrome/browser/themes/theme_service.h"
@@ skipping 26 matching lines @@
 
 views::DesktopWindowTreeHost*
     BrowserDesktopWindowTreeHostX11::AsDesktopWindowTreeHost() {
   return this;
 }
 
 int BrowserDesktopWindowTreeHostX11::GetMinimizeButtonOffset() const {
   return 0;
 }
 
+int BrowserDesktopWindowTreeHostX11::GetCaptionButtonHeight() const {
+  NOTIMPLEMENTED();
+  return 0;
+}
+
 bool BrowserDesktopWindowTreeHostX11::UsesNativeSystemMenu() const {
   return false;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // BrowserDesktopWindowTreeHostX11,
 //     views::DesktopWindowTreeHostX11 implementation:
 
 void BrowserDesktopWindowTreeHostX11::Init(
     aura::Window* content_window,
@@ skipping 18 matching lines @@
     BrowserDesktopWindowTreeHost::CreateBrowserDesktopWindowTreeHost(
         views::internal::NativeWidgetDelegate* native_widget_delegate,
         views::DesktopNativeWidgetAura* desktop_native_widget_aura,
         BrowserView* browser_view,
         BrowserFrame* browser_frame) {
   return new BrowserDesktopWindowTreeHostX11(native_widget_delegate,
                                              desktop_native_widget_aura,
                                              browser_view,
                                              browser_frame);
 }