[Aura] Fix HtmlDialogBrowserTest.SizeWindow.

ui/aura/test/test_window_delegate.cc

Index: ui/aura/test/test_window_delegate.cc
diff --git a/ui/aura/test/test_window_delegate.cc b/ui/aura/test/test_window_delegate.cc
index b179fda6960a70de62afbf36d53a1a2cfc68dd31..a342615ee5e788022fff0836f6262ac6ef4c2831 100644
--- a/ui/aura/test/test_window_delegate.cc
+++ b/ui/aura/test/test_window_delegate.cc
@@ -22,6 +22,9 @@ TestWindowDelegate::TestWindowDelegate() {
 TestWindowDelegate::~TestWindowDelegate() {
 }
 
+void TestWindowDelegate::OnBoundsChanging(gfx::Rect* new_bounds) {
+}
+
 void TestWindowDelegate::OnBoundsChanged(const gfx::Rect& old_bounds,
                                          const gfx::Rect& new_bounds) {
 }