Fixed positioning of tooltips in multi monitor setups.

ui/views/corewm/cursor_height_provider_win.h

Index: ui/views/corewm/cursor_height_provider_win.h
diff --git a/ui/views/corewm/cursor_height_provider_win.h b/ui/views/corewm/cursor_height_provider_win.h
new file mode 100644
index 0000000000000000000000000000000000000000..c93134491f2a1346e32bfcb79dcff4efc8b99af6
--- /dev/null
+++ b/ui/views/corewm/cursor_height_provider_win.h
@@ -0,0 +1,21 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef UI_VIEWS_COREWM_CURSOR_HEIGHT_PROVIDER_WIN_H_
+#define UI_VIEWS_COREWM_CURSOR_HEIGHT_PROVIDER_WIN_H_
+
+namespace views {
+namespace corewm {
+
+// Gets the visible height of current cursor.
+//
+// The height is offset between cursor's hot point and it's
+// bottom edge, derived from first non-transparent row of cursor's mask.
+
+int GetCurrentCursorVisibleHeight();
+
+}  // namespace corewm
+}  // namespace views
+
+#endif  // UI_VIEWS_COREWM_CURSOR_HEIGHT_PROVIDER_WIN_H_