add SK_SUPPORT_NEW_ONCREATESCALERCONTEXT for upcoming skia change

content/child/font_warmup_win_unittest.cc

Index: content/child/font_warmup_win_unittest.cc
diff --git a/content/child/font_warmup_win_unittest.cc b/content/child/font_warmup_win_unittest.cc
index 91c0c84393c406ccd54bf73157b908c027ecd715..a5348ed4e4008f28e70e0e8311f367700b633a2f 100644
--- a/content/child/font_warmup_win_unittest.cc
+++ b/content/child/font_warmup_win_unittest.cc
@@ -37,7 +37,12 @@ class TestSkTypeface : public SkTypeface {
         data_(data, data + dataLength) {}
 
  protected:
+#ifdef SK_SUPPORT_NEW_ONCREATESCALERCONTEXT
+  SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&,
+                                         const SkDescriptor*) const override {
+#else
   SkScalerContext* onCreateScalerContext(const SkDescriptor*) const override {
+#endif
     ADD_FAILURE();
     return nullptr;
   }