gpu_display: generate xlib bindings for input handling and keysyms

BUG=chromium:1023975
TEST=builds

Change-Id: Ic281eb0115e74f8f4fce43c57987be5ad0d50e81
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1930408
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Zach Reizner <zachr@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>

gpu_display/src/generated/xlib_generator.sh

@@ -38,6 +38,7 @@ bindgen --no-layout-tests --no-derive-debug \
   --whitelist-function XFreeGC \
   --whitelist-function XGetVisualInfo \
   --whitelist-function XInternAtom \
+  --whitelist-function XKeycodeToKeysym \
   --whitelist-function XMapRaised \
   --whitelist-function XNextEvent \
   --whitelist-function XOpenDisplay \
@@ -53,11 +54,20 @@ bindgen --no-layout-tests --no-derive-debug \
   --whitelist-function XShmGetEventBase \
   --whitelist-function XShmPutImage \
   --whitelist-function XShmQueryExtension \
+  --whitelist-var 'XK_.*' \
+  --whitelist-var ButtonPressMask \
+  --whitelist-var ButtonReleaseMask \
   --whitelist-var ClientMessage \
   --whitelist-var Expose \
   --whitelist-var ExposureMask \
+  --whitelist-var KeyPress \
+  --whitelist-var KeyPressMask \
+  --whitelist-var KeyRelease \
+  --whitelist-var KeyReleaseMask \
+  --whitelist-var MotionNotify \
   --whitelist-var PMaxSize \
   --whitelist-var PMinSize \
+  --whitelist-var PointerMotionMask \
   --whitelist-var ShmCompletion \
   --whitelist-var VisualBlueMaskMask \
   --whitelist-var VisualDepthMask \

gpu_display/src/generated/xlib_wrapper.h

@@ -1,4 +1,8 @@
+// Copyright 2019 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
 #define XUTIL_DEFINE_FUNCTIONS
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/extensions/XShm.h>
+#include <X11/keysymdef.h>