Make lost context and error message callbacks on GpuControl go to client

gpu/blink/webgraphicscontext3d_in_process_command_buffer_impl.cc

Index: gpu/blink/webgraphicscontext3d_in_process_command_buffer_impl.cc
diff --git a/gpu/blink/webgraphicscontext3d_in_process_command_buffer_impl.cc b/gpu/blink/webgraphicscontext3d_in_process_command_buffer_impl.cc
index 9a2a59689c6dba931b46885ea99c428cb8db0495..de925a59f79c7c229234013053bd09c2a1ee906a 100644
--- a/gpu/blink/webgraphicscontext3d_in_process_command_buffer_impl.cc
+++ b/gpu/blink/webgraphicscontext3d_in_process_command_buffer_impl.cc
@@ -64,6 +64,11 @@ WebGraphicsContext3DInProcessCommandBufferImpl::
 
 WebGraphicsContext3DInProcessCommandBufferImpl::
     ~WebGraphicsContext3DInProcessCommandBufferImpl() {
+  if (real_gl_) {
+    real_gl_->SetErrorMessageCallback(
+        base::Callback<void(const char*, int32_t)>());
+    real_gl_->SetLostContextCallback(base::Closure());
+  }
 }
 
 size_t WebGraphicsContext3DInProcessCommandBufferImpl::GetMappedMemoryLimit() {