[Aura] Fix HtmlDialogBrowserTest.SizeWindow.

ui/aura/test/test_window_delegate.cc

 // Copyright (c) 2011 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 "ui/aura/test/test_window_delegate.h"
 
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "ui/aura/event.h"
 #include "ui/aura/window.h"
 #include "ui/base/hit_test.h"
 #include "ui/gfx/canvas.h"
 
 namespace aura {
 namespace test {
 
 ////////////////////////////////////////////////////////////////////////////////
 // TestWindowDelegate
 
 TestWindowDelegate::TestWindowDelegate() {
 }
 
 TestWindowDelegate::~TestWindowDelegate() {
 }
 
+void TestWindowDelegate::OnBoundsChanging(gfx::Rect* new_bounds) {
+}
+
 void TestWindowDelegate::OnBoundsChanged(const gfx::Rect& old_bounds,
                                          const gfx::Rect& new_bounds) {
 }
 
 void TestWindowDelegate::OnFocus() {
 }
 
 void TestWindowDelegate::OnBlur() {
 }
 
@@ skipping 87 matching lines @@
 }
 void ActivateWindowDelegate::OnActivated() {
   activated_count_++;
 }
 void ActivateWindowDelegate::OnLostActive() {
   lost_active_count_++;
 }
 
 }  // namespace test
 }  // namespace aura