Support calc(...) in ConsumeAngleOrPercent / for conic-gradient

third_party/WebKit/Source/core/css/CSSPrimitiveValue.h

Index: third_party/WebKit/Source/core/css/CSSPrimitiveValue.h
diff --git a/third_party/WebKit/Source/core/css/CSSPrimitiveValue.h b/third_party/WebKit/Source/core/css/CSSPrimitiveValue.h
index a0c694e6b74dd6b92d2a4b438d94f508d3d8dbe2..ab683277c610681fdddbb27feb9fdd50369b0de5 100644
--- a/third_party/WebKit/Source/core/css/CSSPrimitiveValue.h
+++ b/third_party/WebKit/Source/core/css/CSSPrimitiveValue.h
@@ -164,7 +164,7 @@ class CORE_EXPORT CSSPrimitiveValue : public CSSValue {
     return unit == UnitType::kDegrees || unit == UnitType::kRadians ||
            unit == UnitType::kGradians || unit == UnitType::kTurns;
   }
-  bool IsAngle() const { return IsAngle(GetType()); }
+  bool IsAngle() const { return IsAngle(TypeWithCalcResolved()); }

[f(malita), 2017/04/10 14:16:26]

All IsFoo() helpers seem to ignore calc values at this point.  For consistency,
I suggest we leave IsAngle() as-is for now and update the test in
CSSGradientValue::AddStops() instead:

  stop.offset_->IsAngle() =>
CSSPrimitiveValue::IsAngle(stop.offset_->TypeWithCalcResolved())

[fs, 2017/04/10 14:22:58]

Hmm, IsLength, IsNumber and IsPercentage (the non-static versions) all use
TypeWithCalcResolved()?

   bool IsFontRelativeLength() const {
     return GetType() == UnitType::kQuirkyEms || GetType() == UnitType::kEms ||
            GetType() == UnitType::kExs || GetType() == UnitType::kRems ||