Remove the problematic call to GLSurface::GetBackingFrameBufferObject.

gpu/command_buffer/service/gl_context_virtual.cc

Index: gpu/command_buffer/service/gl_context_virtual.cc
diff --git a/gpu/command_buffer/service/gl_context_virtual.cc b/gpu/command_buffer/service/gl_context_virtual.cc
index e7a4c043bf7021fdacb0f8fb1a142173eb96f276..a29e540981b70830ad1d72048a0d49f573cb8f10 100644
--- a/gpu/command_buffer/service/gl_context_virtual.cc
+++ b/gpu/command_buffer/service/gl_context_virtual.cc
@@ -71,8 +71,7 @@ void GLContextVirtual::ReleaseCurrent(gfx::GLSurface* surface) {
 bool GLContextVirtual::IsCurrent(gfx::GLSurface* surface) {
   // If it's a real surface it needs to be current.
   if (surface &&

[no sievers, 2013/09/09 17:04:12]

nit: I think this fits in one line now

-      !surface->IsOffscreen() &&
-      !surface->GetBackingFrameBufferObject())
+      !surface->IsOffscreen())
     return shared_context_->IsCurrent(surface);
 
   // Otherwise, only insure the context itself is current.