Removes most of aura dependencies from DefaultState

ash/wm/common/window_positioning_utils.h

 // Copyright 2016 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_COMMON_WINDOW_POSITIONING_UTILS_H_
 #define ASH_WM_COMMON_WINDOW_POSITIONING_UTILS_H_
 
 #include "ash/ash_export.h"
 
 namespace gfx {
 class Rect;
 class Size;
 }
 
 namespace ash {
 namespace wm {
 
+class WmWindow;
+
 // We force at least this many DIPs for any window on the screen.
 const int kMinimumOnScreenArea = 25;
 
 // Adjusts |bounds| so that the size does not exceed |max_size|.
 ASH_EXPORT void AdjustBoundsSmallerThan(const gfx::Size& max_size,
                                         gfx::Rect* bounds);
 
 // Move the given bounds inside the given |visible_area| in parent coordinates,
 // including a safety margin given by |min_width| and |min_height|.
 // This also ensures that the top of the bounds is visible.
 ASH_EXPORT void AdjustBoundsToEnsureWindowVisibility(
     const gfx::Rect& visible_area,
     int min_width,
     int min_height,
     gfx::Rect* bounds);
 
 // Move the given bounds inside the given |visible_area| in parent coordinates,
 // including a safety margin given by |kMinimumOnScreenArea|.
 // This also ensures that the top of the bounds is visible.
 ASH_EXPORT void AdjustBoundsToEnsureMinimumWindowVisibility(
     const gfx::Rect& visible_area,
     gfx::Rect* bounds);
 
+// Returns the bounds of a left snapped window with default width in parent
+// coordinates.
+ASH_EXPORT gfx::Rect GetDefaultLeftSnappedWindowBoundsInParent(
+    WmWindow* window);
+
+// Returns the bounds of a right snapped window with default width in parent
+// coordinates.
+ASH_EXPORT gfx::Rect GetDefaultRightSnappedWindowBoundsInParent(
+    WmWindow* window);
+
 }  // namespace wm
 }  // namespace ash
 
 #endif  // ASH_WM_COMMON_WINDOW_POSITIONING_UTILS_H_