Fix the issue of cursor's device scale factor when using monitors with differnt device scale factor.

ash/ui_controls_ash.cc

Index: ash/ui_controls_ash.cc
diff --git a/ash/ui_controls_ash.cc b/ash/ui_controls_ash.cc
index f2aba71303c98c5f9995eb7f1b2d42515b3ae8d7..a25410666063a81dd6bf56dedf17dbd75640716d 100644
--- a/ash/ui_controls_ash.cc
+++ b/ash/ui_controls_ash.cc
@@ -37,14 +37,8 @@ ui_controls::UIControlsAura* GetUIControlsForRootWindow(
 // UIControlsAura's root window.  NULL if there is no RootWindow under
 // the |point|.
 ui_controls::UIControlsAura* GetUIControlsAt(gfx::Point* point) {

[oshima, 2012/10/17 18:47:17]

point_in_screen while you're at it.

[mazda, 2012/10/17 19:13:30]

Done.

-  // If there is a capture events must be relative to it.
-  aura::client::CaptureClient* capture_client =
-      GetCaptureClient(ash::Shell::GetInstance()->GetPrimaryRootWindow());
-  aura::RootWindow* root = NULL;
-  if (capture_client && capture_client->GetCaptureWindow())
-    root = capture_client->GetCaptureWindow()->GetRootWindow();
-  else
-    root = wm::GetRootWindowAt(*point);
+  // TODO(mazda): Support the case passive grab is taken.
+  aura::RootWindow* root = wm::GetRootWindowAt(*point);
 
   aura::client::ScreenPositionClient* screen_position_client =
       aura::client::GetScreenPositionClient(root);