Move ash specific cursor code to CursorManager.

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 3a518879aa1b9936cb57b7f16c6a62d86c15838a..3287e7a9fcb77b0de1607374bc2e861df6209b40 100644
--- a/ui/base/x/x11_util.cc
+++ b/ui/base/x/x11_util.cc
@@ -453,6 +453,29 @@ XcursorImage* SkBitmapToXcursorImage(const SkBitmap* bitmap,
 }
 #endif
 
+void HideHostCursor() {
+  XDefineCursor(ui::GetXDisplay(), DefaultRootWindow(ui::GetXDisplay()),
+                GetInvisibleCursor());
+}
+
+::Cursor GetInvisibleCursor() {
+  Display* xdisplay = ui::GetXDisplay();
+  CR_DEFINE_STATIC_LOCAL(XScopedCursor, invisible_cursor, (0U, xdisplay));
+  if (invisible_cursor.get())
+    return invisible_cursor.get();
+
+  // Initialize invisible cursor.
+  char nodata[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+  XColor black;
+  black.red = black.green = black.blue = 0;
+  Pixmap blank = XCreateBitmapFromData(xdisplay, DefaultRootWindow(xdisplay),
+                                       nodata, 8, 8);
+  invisible_cursor.reset(XCreatePixmapCursor(xdisplay, blank, blank,
+                                             &black, &black, 0, 0));
+  XFreePixmap(xdisplay, blank);
+  return invisible_cursor.get();
+}
+
 XID GetX11RootWindow() {
   return DefaultRootWindow(GetXDisplay());
 }
@@ -1336,6 +1359,25 @@ XScopedString::~XScopedString() {
   XFree(string_);
 }
 
+XScopedCursor::XScopedCursor(::Cursor cursor, Display* display)
+    : cursor_(cursor),
+      display_(display) {
+}
+
+XScopedCursor::~XScopedCursor() {
+  reset(0U);
+}
+
+::Cursor XScopedCursor::get() const {
+  return cursor_;
+}
+
+void XScopedCursor::reset(::Cursor cursor) {
+  if (cursor_)
+    XFreeCursor(display_, cursor_);
+  cursor_ = cursor;
+}
+
 // ----------------------------------------------------------------------------
 // These functions are declared in x11_util_internal.h because they require
 // XLib.h to be included, and it conflicts with many other headers.