x11: Use scoped_ptr<> for X11 objects where it makes sense.

ui/gl/gl_image_glx.cc

 // Copyright (c) 2012 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.
 
 extern "C" {
 #include <X11/Xlib.h>
 }
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_image_glx.h"
 #include "ui/gl/gl_surface_glx.h"
 
 namespace gfx {
 
 namespace {
 
-// scoped_ptr functor for XFree(). Use as follows:
-//   scoped_ptr<XVisualInfo, ScopedPtrXFree> foo(...);
-// where "XVisualInfo" is any X type that is freed with XFree.
-struct ScopedPtrXFree {
-  void operator()(void* x) const { ::XFree(x); }
-};
-
 bool ValidFormat(unsigned internalformat) {
   switch (internalformat) {
     case GL_RGB:
     case GL_RGBA:
       return true;
     default:
       return false;
   }
 }
 
@@ skipping 98 matching lines @@
 
   DCHECK_EQ(PixmapDepth(internalformat_), ActualPixmapDepth(pixmap));
   DCHECK_EQ(size_.ToString(), ActualPixmapSize(pixmap).ToString());
 
   int config_attribs[] = {
       GLX_DRAWABLE_TYPE,                    GLX_PIXMAP_BIT,
       GLX_BIND_TO_TEXTURE_TARGETS_EXT,      GLX_TEXTURE_2D_EXT,
       BindToTextureFormat(internalformat_), GL_TRUE,
       0};
   int num_elements = 0;
-  scoped_ptr<GLXFBConfig, ScopedPtrXFree> config(
-      glXChooseFBConfig(gfx::GetXDisplay(),
-                        DefaultScreen(gfx::GetXDisplay()),
-                        config_attribs,
-                        &num_elements));
+  gfx::XScopedPtr<GLXFBConfig> config(
+      glXChooseFBConfig(gfx::GetXDisplay(), DefaultScreen(gfx::GetXDisplay()),
+                        config_attribs, &num_elements));
   if (!config.get()) {
     DVLOG(0) << "glXChooseFBConfig failed.";
     return false;
   }
   if (!num_elements) {
     DVLOG(0) << "glXChooseFBConfig returned 0 elements.";
     return false;
   }
 
   int pixmap_attribs[] = {GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
@@ skipping 43 matching lines @@
 
 bool GLImageGLX::ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                                       int z_order,
                                       OverlayTransform transform,
                                       const Rect& bounds_rect,
                                       const RectF& crop_rect) {
   return false;
 }
 
 }  // namespace gfx