[Ash] Only snap windows that can maximize.

ash/accelerators/accelerator_controller_unittest.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 "ash/accelerators/accelerator_controller.h"
 
 #include "ash/accelerators/accelerator_table.h"
 #include "ash/accessibility_delegate.h"
 #include "ash/ash_switches.h"
 #include "ash/display/display_manager.h"
@@ skipping 405 matching lines @@
   const ui::Accelerator accelerator_shift_a(ui::VKEY_A, ui::EF_SHIFT_DOWN);
   TestTarget target;
   GetController()->Register(accelerator_a, &target);
   EXPECT_TRUE(GetController()->IsRegistered(accelerator_a));
   EXPECT_FALSE(GetController()->IsRegistered(accelerator_shift_a));
   GetController()->UnregisterAll(&target);
   EXPECT_FALSE(GetController()->IsRegistered(accelerator_a));
 }
 
 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());
 
   window_state->Activate();
 
   {
     GetController()->PerformAction(WINDOW_SNAP_LEFT, dummy);
     gfx::Rect expected_bounds = wm::GetDefaultLeftSnappedWindowBoundsInParent(
         window.get());
@@ skipping 806 matching lines @@
     window.reset(CreateTestWindowInShellWithBounds(gfx::Rect(5, 5, 20, 20)));
     wm::ActivateWindow(window.get());
     GetController()->PerformAction(WINDOW_MINIMIZE, dummy);
     delegate->TriggerAccessibilityAlert(A11Y_ALERT_NONE);
     GetController()->PerformAction(kActionsNeedingWindow[i], dummy);
     EXPECT_NE(delegate->GetLastAccessibilityAlert(), A11Y_ALERT_WINDOW_NEEDED);
   }
 }
 
 }  // namespace ash