Aura: Remove overlapping window mode

ash/wm/workspace/workspace_event_filter_unittest.cc

Index: ash/wm/workspace/workspace_event_filter_unittest.cc
diff --git a/ash/wm/workspace/workspace_event_filter_unittest.cc b/ash/wm/workspace/workspace_event_filter_unittest.cc
index f436b0ff7eee2f631190d964ef79923212d6ad2d..331b5eec3a08916b37d1f7845a88e058a5b0107b 100644
--- a/ash/wm/workspace/workspace_event_filter_unittest.cc
+++ b/ash/wm/workspace/workspace_event_filter_unittest.cc
@@ -36,12 +36,6 @@ class WorkspaceEventFilterTest : public test::AshTestBase {
   }
 
  private:
-  // Overridden from test::AshTestBase:
-  virtual bool GetOverrideWindowMode(Shell::WindowMode* window_mode) OVERRIDE {
-    *window_mode = Shell::MODE_MANAGED;
-    return true;
-  }
-
   DISALLOW_COPY_AND_ASSIGN(WorkspaceEventFilterTest);
 };