ash: Refactor some code that snaps windows.

ash/wm/window_util.h

Index: ash/wm/window_util.h
diff --git a/ash/wm/window_util.h b/ash/wm/window_util.h
index f1da5b8d79366039a0ca17eaab6b3aab197b129b..110f89ed45a1d76066661836cfd63b2e12c4cccd 100644
--- a/ash/wm/window_util.h
+++ b/ash/wm/window_util.h
@@ -6,6 +6,7 @@
 #define ASH_WM_WINDOW_UTIL_H_
 
 #include "ash/ash_export.h"
+#include "ash/wm/workspace/snap_sizer.h"
 #include "base/compiler_specific.h"
 #include "ui/base/ui_base_types.h"
 
@@ -84,6 +85,10 @@ ASH_EXPORT void ToggleMaximizedWindow(aura::Window* window);
 // Moves the window to the center of the display.
 ASH_EXPORT void CenterWindow(aura::Window* window);
 
+// Snaps a window left or right.
+ASH_EXPORT void SnapWindow(aura::Window* window,

[sky, 2012/11/28 22:04:01]

In hope of not making this file contain a ton of stuff, what do you think of
making this a static function on SnapSizer? Especially since it takes a
SnapSizer edge.

[sadrul, 2012/11/28 23:20:16]

Yep. Sounds good to me. Done.

+                           internal::SnapSizer::Edge edge);
+
 // Returns the existing Layer for |window| (and all its descendants) and creates
 // a new layer for |window| and all its descendants. This is intended for
 // animations that want to animate between the existing visuals and a new window