Adding new maximize menu according to spec

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 0124c2f4159d92d5c4799c1e4a4688c292e3a654..2b0eec7b4c6aee689acacbff67786bb52cba8411 100644
--- a/ash/wm/workspace/frame_maximize_button.h
+++ b/ash/wm/workspace/frame_maximize_button.h
@@ -6,8 +6,10 @@
 #define ASH_WM_WORKSPACE_FRAME_MAXIMIZE_BUTTON_H_
 
 #include "ash/ash_export.h"
+#include "ash/wm/workspace/snap_types.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer.h"
+#include "ui/aura/window_observer.h"
 #include "ui/views/controls/button/image_button.h"
 
 namespace views {
@@ -21,13 +23,36 @@ class PhantomWindowController;
 class SnapSizer;
 }
 
+class MaximizeBubbleController;
+
 // Button used for the maximize control on the frame. Handles snapping logic.
-class ASH_EXPORT FrameMaximizeButton : public views::ImageButton {
+class ASH_EXPORT FrameMaximizeButton : public views::ImageButton,
+                                       public aura::WindowObserver {
  public:
   FrameMaximizeButton(views::ButtonListener* listener,
                       views::NonClientFrameView* frame);
   virtual ~FrameMaximizeButton();
 
+  // Updates |snap_type_| based on a a given snap type. This is used by
+  // external hover events from the button menu.
+  void SnapButtonHovered(SnapType type);
+
+  // The user clicked the |type| button and the action needs to be performed,
+  // which will at the same time close the window.
+  void ExecuteSnapAndCloseMenu(SnapType type);
+
+  // Remove the maximize menu from the screen (and destroy it).
+  void DestroyMaximizeMenu();
+
+  // Returns true when the user clicks and drags the button.
+  bool is_snap_enabled() const { return is_snap_enabled_; }
+
+  // WindowObserver overrides:
+  virtual void OnWindowBoundsChanged(aura::Window* window,
+                                     const gfx::Rect& old_bounds,
+                                     const gfx::Rect& new_bounds) OVERRIDE;
+  virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
+
   // ImageButton overrides:
   virtual bool OnMousePressed(const views::MouseEvent& event) OVERRIDE;
   virtual void OnMouseEntered(const views::MouseEvent& event) OVERRIDE;
@@ -38,23 +63,9 @@ class ASH_EXPORT FrameMaximizeButton : public views::ImageButton {
   virtual ui::GestureStatus OnGestureEvent(
       const views::GestureEvent& event) OVERRIDE;
 
- protected:
-  // ImageButton overrides:
-  virtual gfx::ImageSkia GetImageToPaint() OVERRIDE;
-
  private:
   class EscapeEventFilter;
 
-  // Where to snap to.
-  enum SnapType {
-    SNAP_LEFT,
-    SNAP_RIGHT,
-    SNAP_MAXIMIZE,
-    SNAP_MINIMIZE,
-    SNAP_RESTORE,
-    SNAP_NONE
-  };
-
   // Initializes the snap-gesture based on the event. This should only be called
   // when the event is confirmed to have started a snap gesture.
   void ProcessStartEvent(const views::LocatedEvent& event);
@@ -66,8 +77,9 @@ class ASH_EXPORT FrameMaximizeButton : public views::ImageButton {
   // Returns true if the window was snapped. Returns false otherwise.
   bool ProcessEndEvent(const views::LocatedEvent& event);
 
-  // Cancels snap behavior.
-  void Cancel();
+  // Cancels snap behavior. If |keep_menu_open| is set, a possibly opened
+  // bubble help will remain open.
+  void Cancel(bool keep_menu_open);
 
   // Installs/uninstalls an EventFilter to track when escape is pressed.
   void InstallEventFilter();
@@ -106,6 +118,9 @@ class ASH_EXPORT FrameMaximizeButton : public views::ImageButton {
   // Did the user drag far enough to trigger snapping?
   bool exceeded_drag_threshold_;
 
+  // This is the Window we are contained in.
+  aura::Window* window_;
+
   // Location of the press.
   gfx::Point press_location_;
 
@@ -118,6 +133,8 @@ class ASH_EXPORT FrameMaximizeButton : public views::ImageButton {
 
   base::OneShotTimer<FrameMaximizeButton> update_timer_;
 
+  scoped_ptr<MaximizeBubbleController> maximizer_;
+
   DISALLOW_COPY_AND_ASSIGN(FrameMaximizeButton);
 };