Move ui::GetAtom to gfx::GetAtom

chrome/browser/media/webrtc/window_icon_util_x11.cc

 // 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.
 
 #include "chrome/browser/media/webrtc/window_icon_util.h"
 
 #include <X11/Xatom.h>
 #include <X11/Xutil.h>
 
 #include "ui/base/x/x11_util.h"
+#include "ui/gfx/x/x11_atom_cache.h"
 #include "ui/gfx/x/x11_error_tracker.h"
 #include "ui/gfx/x/x11_types.h"
 
 gfx::ImageSkia GetWindowIcon(content::DesktopMediaID id) {
   DCHECK(id.type == content::DesktopMediaID::TYPE_WINDOW);
 
   Display* display = gfx::GetXDisplay();
-  Atom property = ui::GetAtom("_NET_WM_ICON");
+  Atom property = gfx::GetAtom("_NET_WM_ICON");
   Atom actual_type;
   int actual_format;
   unsigned long bytes_after;  // NOLINT: type required by XGetWindowProperty
   unsigned long size;
   long* data;
 
   // The |error_tracker| essentially provides an empty X error handler for
   // the call of XGetWindowProperty. The motivation is to guard against crash
   // for any reason that XGetWindowProperty fails. For example, at the time that
   // XGetWindowProperty is called, the window handler (a.k.a |id.id|) may
@@ skipping 37 matching lines @@
   for (long y = 0; y < height; ++y) {
     for (long x = 0; x < width; ++x) {
       pixels_data[result.rowBytesAsPixels() * y + x] =
           static_cast<uint32_t>(data[start + width * y + x]);
     }
   }
 
   XFree(data);
   return gfx::ImageSkia::CreateFrom1xBitmap(result);
 }