Remove app/win/win_util.h,cc etc.

ui/base/x/x11_util.cc

Index: ui/base/x/x11_util.cc
diff --git a/ui/base/x/x11_util.cc b/ui/base/x/x11_util.cc
index f7222fc8b9e1b86adc7d1bd56cd7f04c419dbdf0..1232bc8e7cf24b1b47e731b811fd80a6d2f1a24b 100644
--- a/ui/base/x/x11_util.cc
+++ b/ui/base/x/x11_util.cc
@@ -687,54 +687,6 @@ bool GetWindowManagerName(std::string* wm_name) {
   return !got_error && result;
 }
 
-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;
-}
-
-void GrabWindowSnapshot(GtkWindow* 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;
-  }
-  XImage* image = XGetImage(
-      display, win, 0, 0, attr.width, attr.height, AllPlanes, ZPixmap);
-  if (!image) {
-    LOG(ERROR) << "Couldn't get image";
-    return;
-  }
-  if (image->depth != 24) {
-    LOG(ERROR)<< "Unsupported image depth " << image->depth;
-    return;
-  }
-  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;
-  }
-  cairo_surface_write_to_png_stream(
-      surface, SnapshotCallback, png_representation);
-  cairo_surface_destroy(surface);
-}
-
 bool ChangeWindowDesktop(XID window, XID destination) {
   int desktop;
   if (!GetWindowDesktop(destination, &desktop))