Disable LayoutProviderTest.LegacyFontSizeConstants test

BUG=961938
TBR=msw@chromium.org,etienneb@chromium.org

Change-Id: Ic4ed7e67cdee714b46c06b913e1fee28fc2985e2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1606773Reviewed-by: Alexei Filippov <alph@chromium.org>
Commit-Queue: Alexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#658826}

chrome/browser/ui/views/layout_provider_unittest.cc

@@ -63,7 +63,13 @@ class LayoutProviderTest : public testing::Test {
 // Check legacy font sizes. No new code should be using these constants, but if
 // these tests ever fail it probably means something in the old UI will have
 // changed by mistake.
-TEST_F(LayoutProviderTest, LegacyFontSizeConstants) {
+// https://crbug.com/961938
+#if defined(OS_MACOSX)
+#define MAYBE_LegacyFontSizeConstants DISABLED_LegacyFontSizeConstants
+#else
+#define MAYBE_LegacyFontSizeConstants LegacyFontSizeConstants
+#endif
+TEST_F(LayoutProviderTest, MAYBE_LegacyFontSizeConstants) {
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   gfx::FontList label_font = rb.GetFontListWithDelta(ui::kLabelFontSizeDelta);