[Ash] Only snap windows that can maximize.

ash/wm/panels/panel_window_resizer_unittest.cc

Index: ash/wm/panels/panel_window_resizer_unittest.cc
diff --git a/ash/wm/panels/panel_window_resizer_unittest.cc b/ash/wm/panels/panel_window_resizer_unittest.cc
index 42abd7d792a86ba1e84d75540016500cf8c61fbb..2177154ad91e5a1bd2ad65818c6ce82b4838f593 100644
--- a/ash/wm/panels/panel_window_resizer_unittest.cc
+++ b/ash/wm/panels/panel_window_resizer_unittest.cc
@@ -23,6 +23,7 @@
 #include "ash/wm/wm_event.h"
 #include "base/win/windows_version.h"
 #include "ui/aura/client/aura_constants.h"
+#include "ui/aura/test/test_window_delegate.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -401,8 +402,11 @@ TEST_F(PanelWindowResizerTest, AttachToSecondFullscreenDisplay) {
   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
   scoped_ptr<aura::Window> window(
       CreatePanelWindow(gfx::Point(0, 0)));
-  scoped_ptr<aura::Window> fullscreen(
-      CreateTestWindowInShellWithBounds(gfx::Rect(600, 0, 101, 101)));
+  scoped_ptr<aura::Window> fullscreen(CreateTestWindowInShellWithDelegate(
+      aura::test::TestWindowDelegate::CreateSelfDestroyingDelegate(),
+      0,
+      gfx::Rect(600, 0, 101, 101)));
+  fullscreen->SetProperty(aura::client::kCanMaximizeKey, true);
   wm::GetWindowState(fullscreen.get())->Activate();
   const wm::WMEvent event(wm::WM_EVENT_TOGGLE_FULLSCREEN);
   wm::GetWindowState(fullscreen.get())->OnWMEvent(&event);