[Ash] Only snap windows that can maximize.

ash/display/display_controller_unittest.cc

Index: ash/display/display_controller_unittest.cc
diff --git a/ash/display/display_controller_unittest.cc b/ash/display/display_controller_unittest.cc
index cb2bcb2542c20d7baee41447332622d73a3a1263..cfc6109b611f120f67d535ed677136f7698cd3c2 100644
--- a/ash/display/display_controller_unittest.cc
+++ b/ash/display/display_controller_unittest.cc
@@ -23,6 +23,7 @@
 #include "ui/aura/client/focus_change_observer.h"
 #include "ui/aura/client/focus_client.h"
 #include "ui/aura/env.h"
+#include "ui/aura/test/test_window_delegate.h"
 #include "ui/aura/window_tracker.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/events/event_handler.h"
@@ -554,7 +555,10 @@ TEST_F(DisplayControllerTest, MirrorToDockedWithFullscreen) {
     return;
 
   // Creates windows to catch activation change event.
-  scoped_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
+  scoped_ptr<aura::Window> w1(CreateTestWindowInShellWithDelegate(
+      aura::test::TestWindowDelegate::CreateSelfDestroyingDelegate(),
+      1,
+      gfx::Rect()));

[oshima, 2014/09/11 17:25:49]

what kind of error you had?

[jackhou1, 2014/09/11 18:02:18]

Basically they'd fail because CanMaximize is false is the delegate is null.

   w1->Focus();
 
   // Docked mode.