[Ash] Only snap windows that can maximize.

ash/accelerators/accelerator_controller_unittest.cc

Index: ash/accelerators/accelerator_controller_unittest.cc
diff --git a/ash/accelerators/accelerator_controller_unittest.cc b/ash/accelerators/accelerator_controller_unittest.cc
index 31ebf9b4e41372d262315ef9e27db36153c2af10..5ca644ede6f791cbf43c01c909fabff65bd158c8 100644
--- a/ash/accelerators/accelerator_controller_unittest.cc
+++ b/ash/accelerators/accelerator_controller_unittest.cc
@@ -423,8 +423,10 @@ TEST_F(AcceleratorControllerTest, IsRegistered) {
 }
 
 TEST_F(AcceleratorControllerTest, WindowSnap) {
-  scoped_ptr<aura::Window> window(
-      CreateTestWindowInShellWithBounds(gfx::Rect(5, 5, 20, 20)));
+  scoped_ptr<aura::Window> window(CreateTestWindowInShellWithDelegate(
+      aura::test::TestWindowDelegate::CreateSelfDestroyingDelegate(),
+      0,
+      gfx::Rect(5, 5, 20, 20)));
   const ui::Accelerator dummy;
 
   wm::WindowState* window_state = wm::GetWindowState(window.get());