Add ash-enable-sticky-edges for 'sticky' instead of 'snap' behavior.

ash/ash_switches.cc

Index: ash/ash_switches.cc
diff --git a/ash/ash_switches.cc b/ash/ash_switches.cc
index 696e8c32bbcd5bebbe4ba1c2947769dc7ddf2a2b..bbbc3dbd325338fa4f90bb8de49b675b610c42be 100644
--- a/ash/ash_switches.cc
+++ b/ash/ash_switches.cc
@@ -89,6 +89,9 @@ const char kAshEnableMemoryMonitor[] = "ash-enable-memory-monitor";
 // Enables the Oak tree viewer.
 const char kAshEnableOak[] = "ash-enable-oak";
 
+// Enables "sticky" edges instead of "snap-to-edge"
+const char kAshEnableStickyEdges[] = "ash-enable-sticky-edges";
+
 // Enables showing the tray bubble by dragging on the shelf.
 const char kAshEnableTrayDragging[] = "ash-enable-tray-dragging";