Allow the cursor to warp even when a window is dragged

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index 2e55736b903a3985b311134fa9362708403d9e08..73ad5b973a9aa4b6e22cc3cdc7b332478d3007ef 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -332,20 +332,6 @@ aura::RootWindow* Shell::GetActiveRootWindow() {
 }
 
 // static
-aura::RootWindow* Shell::GetRootWindowAt(const gfx::Point& point) {
-  const gfx::Display& display = gfx::Screen::GetDisplayNearestPoint(point);
-  return Shell::GetInstance()->display_controller()->
-      GetRootWindowForDisplayId(display.id());
-}
-
-// static
-aura::RootWindow* Shell::GetRootWindowMatching(const gfx::Rect& rect) {
-  const gfx::Display& display = gfx::Screen::GetDisplayMatching(rect);
-  return Shell::GetInstance()->display_controller()->
-      GetRootWindowForDisplayId(display.id());
-}
-
-// static
 Shell::RootWindowList Shell::GetAllRootWindows() {
   return Shell::GetInstance()->display_controller()->
       GetAllRootWindows();