Enables docked windows by default

ash/wm/workspace/workspace_window_resizer.h

Index: ash/wm/workspace/workspace_window_resizer.h
diff --git a/ash/wm/workspace/workspace_window_resizer.h b/ash/wm/workspace/workspace_window_resizer.h
index 5acaf8e5b0ddab5b57c252fb5e762a5c97f72079..d393f1f71d4e046172ad817e0ba2b096000ae9f3 100644
--- a/ash/wm/workspace/workspace_window_resizer.h
+++ b/ash/wm/workspace/workspace_window_resizer.h
@@ -134,6 +134,9 @@ class ASH_EXPORT WorkspaceWindowResizer : public WindowResizer {
   // 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,
@@ -221,6 +224,9 @@ class ASH_EXPORT WorkspaceWindowResizer : public WindowResizer {
   // 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);
 };