CSS: Use count unitless 0 supplied as <angle>

third_party/WebKit/Source/core/css/parser/CSSPropertyParserHelpers.h

Index: third_party/WebKit/Source/core/css/parser/CSSPropertyParserHelpers.h
diff --git a/third_party/WebKit/Source/core/css/parser/CSSPropertyParserHelpers.h b/third_party/WebKit/Source/core/css/parser/CSSPropertyParserHelpers.h
index 7c3259b9aa9766c434ab0c54a508681a36f5d7b6..738fac7dbe1b2ebf29210b58959a494badc7eb73 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSPropertyParserHelpers.h
+++ b/third_party/WebKit/Source/core/css/parser/CSSPropertyParserHelpers.h
@@ -55,7 +55,12 @@ CSSPrimitiveValue* ConsumeLengthOrPercent(
     CSSParserMode,
     ValueRange,
     UnitlessQuirk = UnitlessQuirk::kForbid);
-CSSPrimitiveValue* ConsumeAngle(CSSParserTokenRange&);
+
+CSSPrimitiveValue* ConsumeAngle(
+    CSSParserTokenRange&,
+    const CSSParserContext&,
+    UnitlessQuirk,

[alancutter (OOO until 2018), 2017/05/25 01:53:16]

UnitlessQuirk refers to numbers being interpreted as pixels. It should probably
be renamed more explicitly in another patch.

We shouldn't make its meaning more ambiguous by using it for unitless zero
values. Create a new UnitlessZeroQuirk enum to use here.

[Eric Willigers, 2017/05/25 02:56:41]

Removed.

+    WTF::Optional<UseCounter::Feature> literalZeroFeature);

[alancutter (OOO until 2018), 2017/05/25 01:53:16]

s/literal/unitless/ here and in the description.

[Eric Willigers, 2017/05/25 02:56:41]

Done.

 CSSPrimitiveValue* ConsumeTime(CSSParserTokenRange&, ValueRange);
 CSSPrimitiveValue* ConsumeResolution(CSSParserTokenRange&);