Adding new maximize menu according to spec

ash/wm/workspace/phantom_window_controller.h

Index: ash/wm/workspace/phantom_window_controller.h
diff --git a/ash/wm/workspace/phantom_window_controller.h b/ash/wm/workspace/phantom_window_controller.h
index 5510fc262bd6c71c70a1340d4f9348d422e0616f..6790fa60dc8cb278209cf0329bd08304f86056cd 100644
--- a/ash/wm/workspace/phantom_window_controller.h
+++ b/ash/wm/workspace/phantom_window_controller.h
@@ -50,6 +50,12 @@ class ASH_EXPORT PhantomWindowController : public ui::AnimationDelegate {
   // Returns true if the phantom is showing.
   bool IsShowing() const;
 
+  // Stack the phantom window above the given window upon creation, but below
+  // this one.
+  void set_phantom_below_window(aura::Window* phantom_below_window) {
+    phantom_below_window_ = phantom_below_window;
+  }
+
   // ui::AnimationDelegate overrides:
   virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
 
@@ -60,6 +66,9 @@ class ASH_EXPORT PhantomWindowController : public ui::AnimationDelegate {
   // Window the phantom is placed beneath.
   aura::Window* window_;
 
+  // If set, the phantom window should get stacked below this window.
+  aura::Window* phantom_below_window_;
+
   // Initially the bounds of |window_|. Each time Show() is invoked
   // |start_bounds_| is then reset to the bounds of |phantom_widget_| and
   // |bounds_| is set to the value passed into Show(). The animation animates