Broke out layout metric information from ViewsDelegate to LayoutProvider

ui/views/test/test_views_delegate_mac.mm

Index: ui/views/test/test_views_delegate_mac.mm
diff --git a/ui/views/test/test_views_delegate_mac.mm b/ui/views/test/test_views_delegate_mac.mm
index f2f72a0ef9b7c5ed580d7b0066d0fc0f514ab4dc..e6021749c4b26c82396a88a77eaa7ceaf488954d 100644
--- a/ui/views/test/test_views_delegate_mac.mm
+++ b/ui/views/test/test_views_delegate_mac.mm
@@ -12,7 +12,8 @@ TestViewsDelegate::TestViewsDelegate()
     : context_factory_(nullptr),
       context_factory_private_(nullptr),
       use_desktop_native_widgets_(false),
-      use_transparent_windows_(false) {}
+      use_transparent_windows_(false),
+      layout_delegate_(new ViewsLayoutDelegate()) {}
 
 TestViewsDelegate::~TestViewsDelegate() {
 }
@@ -38,8 +39,4 @@ ui::ContextFactoryPrivate* TestViewsDelegate::GetContextFactoryPrivate() {
   return context_factory_private_;
 }
 
-const TypographyProvider& TestViewsDelegate::GetTypographyProvider() const {
-  return typography_provider_;
-}
-
 }  // namespace views