Clean up SyncCompositorFactory context creation

content/browser/android/in_process/synchronous_compositor_impl.cc

Index: content/browser/android/in_process/synchronous_compositor_impl.cc
diff --git a/content/browser/android/in_process/synchronous_compositor_impl.cc b/content/browser/android/in_process/synchronous_compositor_impl.cc
index 89d919eb28228a332f6f10d5cdfbb570fd182cac..d424adcd36a3a8c6975b6d8562011849331deb97 100644
--- a/content/browser/android/in_process/synchronous_compositor_impl.cc
+++ b/content/browser/android/in_process/synchronous_compositor_impl.cc
@@ -93,12 +93,8 @@ bool SynchronousCompositorImpl::InitializeHwDraw(
   DCHECK(CalledOnValidThread());
   DCHECK(output_surface_);
 
-  // Create contexts in this order so that the share group gets passed
-  // along correctly.
-  scoped_refptr<cc::ContextProvider> offscreen_context =
-      g_factory.Get().GetOffscreenContextProviderForCompositorThread();
   scoped_refptr<cc::ContextProvider> onscreen_context =
-  g_factory.Get().CreateOnscreenContextProviderForCompositorThread(surface);
+      g_factory.Get().CreateOnscreenContextProviderForCompositorThread(surface);
 
   bool success = output_surface_->InitializeHwDraw(onscreen_context);