Only support left/right maximizing at 50% width when the --ash-enable-alternate-caption-button

ash/wm/workspace/frame_maximize_button.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_WM_WORKSPACE_FRAME_MAXIMIZE_BUTTON_H_
 #define ASH_WM_WORKSPACE_FRAME_MAXIMIZE_BUTTON_H_
 
 #include "ash/ash_export.h"
 #include "ash/wm/workspace/maximize_bubble_frame_state.h"
 #include "ash/wm/workspace/snap_types.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/timer/timer.h"
 #include "ui/aura/window_observer.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/widget/widget_observer.h"
 
 namespace views {
 class NonClientFrameView;
 }
 
 namespace ash {
 
 namespace internal {
 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,
                                        public views::WidgetObserver,
                                        public aura::WindowObserver {
  public:
   FrameMaximizeButton(views::ButtonListener* listener,
@@ skipping 71 matching lines @@
   void Cancel(bool keep_menu_open);
 
   // Installs/uninstalls an EventFilter to track when escape is pressed.
   void InstallEventFilter();
   void UninstallEventFilter();
 
   // Updates the snap position from the event location. This is invoked by
   // |update_timer_|.
   void UpdateSnapFromEventLocation();
 
-  // Updates |snap_type_| based on a mouse drag. If |select_default| is set,
-  // the single button click default setting of the snap sizer should be used.
-  // Set |is_touch| to true to make touch snapping at the corners possible.
-  void UpdateSnap(const gfx::Point& location,
-                  bool select_default,
-                  bool is_touch);
+  // Updates |snap_type_| based on a mouse drag.
+  void UpdateSnap(const gfx::Point& location);
 
   // Returns the type of snap based on the specified location.
   SnapType SnapTypeForLocation(const gfx::Point& location) const;
 
   // Returns the bounds of the resulting window for the specified type.
-  gfx::Rect ScreenBoundsForType(SnapType type,
-                                const internal::SnapSizer& snap_sizer) const;
-
-  // Converts location to screen coordinates and returns it. These are the
-  // coordinates used by the SnapSizer.
-  gfx::Point LocationForSnapSizer(const gfx::Point& location) const;
+  gfx::Rect ScreenBoundsForType(SnapType type) const;
 
   // Snaps the window to the current snap position.
-  void Snap(const internal::SnapSizer& snap_sizer);
+  void Snap();
 
   // Determine the maximize type of this window.
   MaximizeBubbleFrameState GetMaximizeBubbleFrameState() const;
 
   // Frame that the maximize button acts on.
   views::NonClientFrameView* frame_;
 
   // Renders the snap position.
   scoped_ptr<internal::PhantomWindowController> phantom_window_;
 
@@ skipping 10 matching lines @@
 
   // Location of the press.
   gfx::Point press_location_;
 
   // True if the press was triggered by a gesture/touch.
   bool press_is_gesture_;
 
   // Current snap type.
   SnapType snap_type_;
 
-  scoped_ptr<internal::SnapSizer> snap_sizer_;
-
   scoped_ptr<EscapeEventFilter> escape_event_filter_;
 
   base::OneShotTimer<FrameMaximizeButton> update_timer_;
 
   scoped_ptr<MaximizeBubbleController> maximizer_;
 
   // The delay of the bubble appearance.
   int bubble_appearance_delay_ms_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameMaximizeButton);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_FRAME_MAXIMIZE_BUTTON_H_