Implement our own GLThread for VR Shell.

gpu/ipc/common/gpu_surface_tracker.cc

 // Copyright (c) 2012 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 "gpu/ipc/common/gpu_surface_tracker.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 
 #if defined(OS_ANDROID)
@@ skipping 46 matching lines @@
 #if defined(OS_ANDROID)
   if (it->second != gfx::kNullAcceleratedWidget)
     ANativeWindow_acquire(it->second);
 #endif  // defined(OS_ANDROID)
 
   return it->second;
 }
 
 #if defined(OS_ANDROID)
 void GpuSurfaceTracker::RegisterViewSurface(
-    int surface_id, const base::android::JavaRef<jobject>& j_surface) {
+    int surface_id, jobject j_surface) {
   base::AutoLock lock(surface_view_map_lock_);
   DCHECK(surface_view_map_.find(surface_id) == surface_view_map_.end());
 
   surface_view_map_[surface_id] =
-      gl::ScopedJavaSurface::AcquireExternalSurface(j_surface.obj());
+      gl::ScopedJavaSurface::AcquireExternalSurface(j_surface);
   CHECK(surface_view_map_[surface_id].IsValid());
 }
 
 void GpuSurfaceTracker::UnregisterViewSurface(int surface_id)
 {
   base::AutoLock lock(surface_view_map_lock_);
   DCHECK(surface_view_map_.find(surface_id) != surface_view_map_.end());
   surface_view_map_.erase(surface_id);
 }
 
 gl::ScopedJavaSurface GpuSurfaceTracker::AcquireJavaSurface(int surface_id) {
   base::AutoLock lock(surface_view_map_lock_);
   SurfaceViewMap::const_iterator iter = surface_view_map_.find(surface_id);
   if (iter == surface_view_map_.end())
     return gl::ScopedJavaSurface();
 
   const gl::ScopedJavaSurface& j_surface = iter->second;
   DCHECK(j_surface.IsValid());
   return gl::ScopedJavaSurface::AcquireExternalSurface(
       j_surface.j_surface().obj());
 }
 #endif
 
 std::size_t GpuSurfaceTracker::GetSurfaceCount() {
   base::AutoLock lock(surface_map_lock_);
   return surface_map_.size();
 }
 
 }  // namespace gpu