Change behaviour of the Alt-] and Alt-[ keys so that it cycles through SnapLeft/SnapRight to DockLe…

ash/wm/wm_event.h

 // Copyright 2014 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_WM_EVENT_H_
 #define ASH_WM_WM_EVENT_H_
 
 #include "ash/ash_export.h"
 #include "ash/wm/wm_types.h"
 #include "ui/gfx/rect.h"
@@ skipping 36 matching lines @@
   // top/bottom edge.
   WM_EVENT_TOGGLE_VERTICAL_MAXIMIZE,
 
   // A user requested to toggle horizontal maximize by double clicking
   // left/right edge.
   WM_EVENT_TOGGLE_HORIZONTAL_MAXIMIZE,
 
   // A user requested to toggle fullscreen state.
   WM_EVENT_TOGGLE_FULLSCREEN,
 
+  // A user requested a cycle of dock and snap left.
+  // The way this event is processed is the current window state is used as
+  // the starting state. Assuming normal window start state; if the window can
+  // be snapped left, snap it; otherwise progress to next state. If the window
+  // can be docked left, dock it; otherwise progress to next state. If the
+  // window can be restored; and this isn't the entry condition restore it;
+  // otherwise apply the bounce animation to the window.
+  WM_EVENT_CYCLE_SNAP_DOCK_LEFT,
+
+  // A user requested a cycle of dock and snap right.
+  // See decription of WM_EVENT_CYCLE_SNAP_DOCK_LEFT.
+  WM_EVENT_CYCLE_SNAP_DOCK_RIGHT,
+
   // A user requested to center a window.
   WM_EVENT_CENTER,
 
   // TODO(oshima): Investigate if this can be removed from ash.
   // Widget requested to show in inactive state.
   WM_EVENT_SHOW_INACTIVE,
 
   // Following events are generated when the workspace envrionment has changed.
   // The window's state type will not be changed by these events.
 
@@ skipping 33 matching lines @@
   gfx::Rect requested_bounds_;
 
   DISALLOW_COPY_AND_ASSIGN(SetBoundsEvent);
 };
 
 }  // namespace wm
 }  // namespace ash
 
 #endif  // ASH_WM_WM_EVENT_H_