Adds getter for ContextFactory to content

content/browser/compositor/gpu_process_transport_factory.cc

Index: content/browser/compositor/gpu_process_transport_factory.cc
diff --git a/content/browser/compositor/gpu_process_transport_factory.cc b/content/browser/compositor/gpu_process_transport_factory.cc
index 16f600a85ae6e110687acf2b3f764ceb78733d51..e75b9636da20a8fff5a257691f31a2ac25d5b36c 100644
--- a/content/browser/compositor/gpu_process_transport_factory.cc
+++ b/content/browser/compositor/gpu_process_transport_factory.cc
@@ -222,6 +222,10 @@ cc::SharedBitmapManager* GpuProcessTransportFactory::GetSharedBitmapManager() {
   return HostSharedBitmapManager::current();
 }
 
+ui::ContextFactory* GpuProcessTransportFactory::AsContextFactory() {
+  return this;
+}
+
 gfx::GLSurfaceHandle GpuProcessTransportFactory::GetSharedSurfaceHandle() {
   gfx::GLSurfaceHandle handle = gfx::GLSurfaceHandle(
       gfx::kNullPluginWindow, gfx::TEXTURE_TRANSPORT);