Do not release capture when transferring capture between Chrome windows on Linux

ui/views/widget/desktop_aura/x11_scoped_capture.cc

-// Copyright 2013 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.
-
-#include "ui/views/widget/desktop_aura/x11_scoped_capture.h"
-
-#include <X11/X.h>
-#include <X11/Xlib.h>
-
-#include "ui/gfx/x/x11_types.h"
-
-namespace views {
-
-X11ScopedCapture::X11ScopedCapture(XID window)
-    : captured_(false) {
-  // TODO(sad): Use XI2 API instead.
-  unsigned int event_mask = PointerMotionMask | ButtonReleaseMask |
-                            ButtonPressMask;
-  int status = XGrabPointer(gfx::GetXDisplay(), window, True, event_mask,
-                            GrabModeAsync, GrabModeAsync, None, None,
-                            CurrentTime);
-  captured_ = status == GrabSuccess;
-}
-
-X11ScopedCapture::~X11ScopedCapture() {
-  if (captured_) {
-    XUngrabPointer(gfx::GetXDisplay(), CurrentTime);
-  }
-}
-
-}  // namespace views