mus: Add PointerWatcher for passively observing mouse and touch events

ui/views/views_exports.cc

Index: ui/views/views_exports.cc
diff --git a/ui/gfx/ui_gfx_exports.cc b/ui/views/views_exports.cc
similarity index 54%
copy from ui/gfx/ui_gfx_exports.cc
copy to ui/views/views_exports.cc
index ca95eb33194449769b4f66400f24581c05472b56..f1ba3f5336ed224e9ca95a6a0890b097d947455d 100644
--- a/ui/gfx/ui_gfx_exports.cc
+++ b/ui/views/views_exports.cc
@@ -1,10 +1,10 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
+// Copyright 2016 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.
 
 // This file is for including headers that are not included in any other .cc
-// files contained with the ui/gfx module.  We need to include these here so
+// files contained within the ui/views module.  We need to include these here so
 // that linker will know to include the symbols, defined by these headers, in
-// the resulting dynamic library (gfx.dll).
+// the resulting dynamic library.
 
-#include "ui/gfx/vsync_provider.h"
+#include "ui/views/pointer_watcher.h"