Adding unit tests for maximize menu

ash/wm/workspace/frame_maximize_button.h

Index: ash/wm/workspace/frame_maximize_button.h
diff --git a/ash/wm/workspace/frame_maximize_button.h b/ash/wm/workspace/frame_maximize_button.h
index 5d6f69b1877a26388313caddc828ff9ca735cfe9..afcd07148fae79b165c4a5dda63ae35d61069727 100644
--- a/ash/wm/workspace/frame_maximize_button.h
+++ b/ash/wm/workspace/frame_maximize_button.h
@@ -63,6 +63,17 @@ class ASH_EXPORT FrameMaximizeButton : public views::ImageButton,
   virtual ui::GestureStatus OnGestureEvent(
       const views::GestureEvent& event) OVERRIDE;
 
+  // Unit test overwrite: Change the UI delay used for the bubble show up.
+  void set_bubble_appearance_delay_ms(int bubble_appearance_delay_ms) {
+    bubble_appearance_delay_ms_ = bubble_appearance_delay_ms;
+  }
+
+  // Unit test accessor for the maximize bubble.
+  MaximizeBubbleController* maximizer() { return maximizer_.get(); }
+
+  // Unit test to see if phantom window is open.
+  bool phantom_window_open() { return phantom_window_.get() != NULL; }
+
  private:
   class EscapeEventFilter;
 
@@ -136,6 +147,9 @@ class ASH_EXPORT FrameMaximizeButton : public views::ImageButton,
 
   scoped_ptr<MaximizeBubbleController> maximizer_;
 
+  // The delay of the bubble appearance.
+  int bubble_appearance_delay_ms_;
+
   DISALLOW_COPY_AND_ASSIGN(FrameMaximizeButton);
 };