Fix leaks in aura_unittests

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 0c11ba4a7eb1bd6c5cf2d4c56decff1931dfd94d..5ff1599263e9f0144e41a01a82038964a8b78279 100644
--- a/ui/aura/test/test_window_delegate.cc
+++ b/ui/aura/test/test_window_delegate.cc
@@ -18,12 +18,21 @@ namespace test {
 ////////////////////////////////////////////////////////////////////////////////
 // TestWindowDelegate
 
-TestWindowDelegate::TestWindowDelegate() : window_component_(HTCLIENT) {
+TestWindowDelegate::TestWindowDelegate()
+    : window_component_(HTCLIENT),
+      delete_on_destroyed_(false) {
 }
 
 TestWindowDelegate::~TestWindowDelegate() {
 }
 
+// static
+TestWindowDelegate* TestWindowDelegate::CreateSelfDestroyingDelegate() {
+  TestWindowDelegate* delegate = new TestWindowDelegate;
+  delegate->delete_on_destroyed_ = true;
+  return delegate;
+}
+
 gfx::Size TestWindowDelegate::GetMinimumSize() const {
   return gfx::Size();
 }
@@ -87,6 +96,8 @@ void TestWindowDelegate::OnWindowDestroying() {
 }
 
 void TestWindowDelegate::OnWindowDestroyed() {
+  if (delete_on_destroyed_)
+    delete this;
 }
 
 void TestWindowDelegate::OnWindowTargetVisibilityChanged(bool visible) {