Revert of Revert of Fixes dragging to be less likely to trigger false positive switch to docking

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 a05039b08f062fc0a7c87a39413b944e8c771cb9..8bf065710df4b7d21242eb2167ee8dc1a25a995e 100644
--- a/ash/wm/workspace/workspace_window_resizer.h
+++ b/ash/wm/workspace/workspace_window_resizer.h
@@ -61,18 +61,13 @@
   void RevertDrag() override;
 
  private:
+  friend class WorkspaceWindowResizerTest;
+
+  // The edge to which the window should be snapped at the end of the drag.
+  enum SnapType { SNAP_LEFT, SNAP_RIGHT, SNAP_NONE };
+
   WorkspaceWindowResizer(wm::WindowState* window_state,
                          const std::vector<aura::Window*>& attached_windows);
-
- private:
-  friend class WorkspaceWindowResizerTest;
-
-  // The edge to which the window should be snapped at the end of the drag.
-  enum SnapType {
-    SNAP_LEFT,
-    SNAP_RIGHT,
-    SNAP_NONE
-  };
 
   // Lays out the attached windows. |bounds| is the bounds of the main window.
   void LayoutAttachedWindows(gfx::Rect* bounds);