Enables docked windows by default

ash/wm/workspace/workspace_window_resizer.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_WINDOW_RESIZER_H_
 #define ASH_WM_WORKSPACE_WINDOW_RESIZER_H_
 
 #include <vector>
 
 #include "ash/wm/window_resizer.h"
@@ skipping 116 matching lines @@
   // bitmask of the MagnetismEdges to match again. Returns true if a match is
   // found.
   bool UpdateMagnetismWindow(const gfx::Rect& bounds, uint32 edges);
 
   // Adjusts the bounds of the window: magnetically snapping, ensuring the
   // window has enough on screen... |snap_size| is the distance from an edge of
   // the work area before the window is snapped. A value of 0 results in no
   // snapping.
   void AdjustBoundsForMainWindow(int snap_size, gfx::Rect* bounds);
 
+  // Returns true if the window should stick to the edge.
+  bool ShouldStickToEdge(int distance_from_edge, int sticky_size) const;
+
   // Stick the window bounds to the work area during a move.
   bool StickToWorkAreaOnMove(const gfx::Rect& work_area,
                              int sticky_size,
                              gfx::Rect* bounds) const;
 
   // Stick the window bounds to the work area during a resize.
   void StickToWorkAreaOnResize(const gfx::Rect& work_area,
                                int sticky_size,
                                gfx::Rect* bounds) const;
 
@@ skipping 67 matching lines @@
   // should attach.
   MatchedEdge magnetism_edge_;
 
   // Dock container window layout manager.
   DockedWindowLayoutManager* dock_layout_;
 
   // Used to determine if this has been deleted during a drag such as when a tab
   // gets dragged into another browser window.
   base::WeakPtrFactory<WorkspaceWindowResizer> weak_ptr_factory_;
 
+  // Current instance for use by the WorkspaceWindowResizerTest.
+  static WorkspaceWindowResizer* instance_;
+
   DISALLOW_COPY_AND_ASSIGN(WorkspaceWindowResizer);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_WINDOW_RESIZER_H_