More Aura fixes, renaming and stubbing

chrome/browser/ui/window_snapshot/window_snapshot_x.cc

-// Copyright (c) 2011 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/ui/window_snapshot/window_snapshot.h"
-
-#include <gdk/gdkx.h>
-#include <gtk/gtk.h>
-
-#include "base/logging.h"
-#include "ui/base/x/x11_util.h"
-#include "ui/gfx/rect.h"
-
-namespace browser {
-
-static cairo_status_t SnapshotCallback(
-    void *closure, const unsigned char *data, unsigned int length) {
-  std::vector<unsigned char>* png_representation =
-      static_cast<std::vector<unsigned char>*>(closure);
-
-  size_t old_size = png_representation->size();
-  png_representation->resize(old_size + length);
-  memcpy(&(*png_representation)[old_size], data, length);
-  return CAIRO_STATUS_SUCCESS;
-}
-
-gfx::Rect GrabWindowSnapshot(gfx::NativeWindow gtk_window,
-                             std::vector<unsigned char>* png_representation) {
-  GdkWindow* gdk_window = GTK_WIDGET(gtk_window)->window;
-  Display* display = GDK_WINDOW_XDISPLAY(gdk_window);
-  XID win = GDK_WINDOW_XID(gdk_window);
-  XWindowAttributes attr;
-  if (XGetWindowAttributes(display, win, &attr) == 0) {
-    LOG(ERROR) << "Couldn't get window attributes";
-    return gfx::Rect();
-  }
-  XImage* image = XGetImage(
-      display, win, 0, 0, attr.width, attr.height, AllPlanes, ZPixmap);
-  if (!image) {
-    LOG(ERROR) << "Couldn't get image";
-    return gfx::Rect();
-  }
-  if (image->depth != 24) {
-    LOG(ERROR)<< "Unsupported image depth " << image->depth;
-    return gfx::Rect();
-  }
-  cairo_surface_t* surface =
-      cairo_image_surface_create_for_data(
-          reinterpret_cast<unsigned char*>(image->data),
-          CAIRO_FORMAT_RGB24,
-          image->width,
-          image->height,
-          image->bytes_per_line);
-
-  if (!surface) {
-    LOG(ERROR) << "Unable to create Cairo surface from XImage data";
-    return gfx::Rect();
-  }
-  cairo_surface_write_to_png_stream(
-      surface, SnapshotCallback, png_representation);
-  cairo_surface_destroy(surface);
-
-  return gfx::Rect(image->width, image->height);
-}
-
-}  // namespace browser