Implement our own GLThread for VR Shell.

ui/gl/android/surface_texture.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gl/android/surface_texture.h"
 
 #include <android/native_window_jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/logging.h"
@@ skipping 82 matching lines @@
   ANativeWindow* native_window = ANativeWindow_fromSurface(
       env, surface.j_surface().obj());
   return native_window;
 }
 
 void SurfaceTexture::ReleaseSurfaceTexture() {
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_SurfaceTexturePlatformWrapper_release(env, j_surface_texture_);
 }
 
+void SurfaceTexture::SetDefaultBufferSize(int width, int height) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_SurfaceTexturePlatformWrapper_setDefaultBufferSize(
+      env, j_surface_texture_, width, height);
+}
+
 }  // namespace gl