Removed last references to old sync points.

mojo/public/platform/native/gles2_thunks.cc

Index: mojo/public/platform/native/gles2_thunks.cc
diff --git a/mojo/public/platform/native/gles2_thunks.cc b/mojo/public/platform/native/gles2_thunks.cc
index 95da13ba1d586961f62c92c029641c86766ebb83..2350fcea64c6095ae3b9da5b99f0da1720a7fccb 100644
--- a/mojo/public/platform/native/gles2_thunks.cc
+++ b/mojo/public/platform/native/gles2_thunks.cc
@@ -44,14 +44,6 @@ void* MojoGLES2GetGLES2Interface(MojoGLES2Context context) {
   return g_control_thunks.GLES2GetGLES2Interface(context);
 }
 
-void MojoGLES2SignalSyncPoint(MojoGLES2Context context,
-                              uint32_t sync_point,
-                              MojoGLES2SignalSyncPointCallback callback,
-                              void* closure) {
-  assert(g_control_thunks.GLES2SignalSyncPoint);
-  g_control_thunks.GLES2SignalSyncPoint(context, sync_point, callback, closure);
-}
-
 extern "C" THUNK_EXPORT size_t MojoSetGLES2ControlThunks(
     const MojoGLES2ControlThunks* gles2_control_thunks) {
   if (gles2_control_thunks->size >= sizeof(g_control_thunks))