Adds ViewsDelegate::GetContextFactory

ui/views/views_delegate.cc

Index: ui/views/views_delegate.cc
diff --git a/ui/views/views_delegate.cc b/ui/views/views_delegate.cc
index bef6cdc730ed425069f1d68be7d3d1526c4328dc..c1c7ca6bd44a0d90baa8f3bc56ca33e0d21a056a 100644
--- a/ui/views/views_delegate.cc
+++ b/ui/views/views_delegate.cc
@@ -81,6 +81,12 @@ bool ViewsDelegate::WindowManagerProvidesTitleBar(bool maximized) {
   return false;
 }
 
+#if defined(USE_AURA)
+ui::ContextFactory* ViewsDelegate::GetContextFactory() {
+  return NULL;
+}
+#endif
+
 #if defined(OS_WIN)
 int ViewsDelegate::GetAppbarAutohideEdges(HMONITOR monitor,
                                           const base::Closure& callback) {