Stick windows to sides of workspaces

ash/wm/property_util.cc

Index: ash/wm/property_util.cc
diff --git a/ash/wm/property_util.cc b/ash/wm/property_util.cc
index d1240b68154304c65a8b597e9340aca37f0fb64c..651094402eb26455a2f2409711d5111efbb8ff8b 100644
--- a/ash/wm/property_util.cc
+++ b/ash/wm/property_util.cc
@@ -43,6 +43,14 @@ void ClearRestoreBounds(aura::Window* window) {
   window->ClearProperty(aura::client::kRestoreBoundsKey);
 }
 
+void SetDockEdge(aura::Window* window, DockEdge value) {
+  window->SetProperty(internal::kDockEdge, value);
+}
+
+DockEdge GetDockEdge(const aura::Window* window) {
+  return window->GetProperty(internal::kDockEdge);
+}
+
 void SetTrackedByWorkspace(aura::Window* window, bool value) {
   window->SetProperty(internal::kWindowTrackedByWorkspaceKey, value);
 }