Support 8bpp screens in X11

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 b2b5ef4b82ac39f9abdd21520b7526864eccaf99..4bfd5c7ee9f9d8222c2a4f42e6a3f7252a6a7d79 100644
--- a/ui/base/x/x11_util.cc
+++ b/ui/base/x/x11_util.cc
@@ -300,6 +300,15 @@ SharedMemorySupport QuerySharedMemorySupport(XDisplay* dpy) {
   return shared_memory_support;
 }
 
+bool QueryRenderSupport(Display* dpy) {
+  int dummy;
+  // We don't care about the version of Xrender since all the features which
+  // we use are included in every version.
+  static bool render_supported = XRenderQueryExtension(dpy, &dummy, &dummy);
+
+  return render_supported;
+}
+
 ::Cursor GetXCursor(int cursor_shape) {
   if (!cursor_cache)
     cursor_cache = new XCursorCache;