ash: Fix launcher icon overlaps with status.

ash/launcher/launcher_view.h

Index: ash/launcher/launcher_view.h
diff --git a/ash/launcher/launcher_view.h b/ash/launcher/launcher_view.h
index dc1d8d1b01985d6a5cb5a5d0253db079c2b03d07..1af29c4b35f4edfe6fb8d703391df3acedd1fe42 100644
--- a/ash/launcher/launcher_view.h
+++ b/ash/launcher/launcher_view.h
@@ -46,11 +46,25 @@ class ASH_EXPORT LauncherView : public views::View,
     explicit TestAPI(LauncherView* launcher_view)
         : launcher_view_(launcher_view) {
     }
+
     // Number of icons displayed.
     int GetButtonCount();
+
     // Retrieve the button at |index|.
     LauncherButton* GetButton(int index);
 
+    // Last visible button index.
+    int GetLastVisibleIndex();
+
+    // Returns true if overflow button is visible.
+    bool IsOverflowButtonVisible();
+
+    // Sets animation duration in milliseconds for test.
+    void SetAnimationDuration(int duration_ms);
+
+    // Runs message loop and waits until all add/remove animations are done.
+    void RunMessageLoopUntilAnimationsDone();
+
    private:
     LauncherView* launcher_view_;
 
@@ -169,6 +183,9 @@ class ASH_EXPORT LauncherView : public views::View,
   // item in |model_|.
   scoped_ptr<views::ViewModel> view_model_;
 
+  // Index of the last visible launcher button (does not go into overflow).
+  int last_visible_index_;
+
   scoped_ptr<views::BoundsAnimator> bounds_animator_;
 
   views::ImageButton* overflow_button_;