[CSSTypedOM] Computed StylePropertyMap use ComputedStyle for Lengths

third_party/WebKit/Source/core/css/cssom/CSSCalcLength.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CSSCalcLength_h
 #define CSSCalcLength_h
 
 #include "core/css/cssom/CSSLengthValue.h"
 #include "wtf/BitVector.h"
 #include <array>
@@ skipping 37 matching lines @@
     std::bitset<CSSLengthValue::kNumSupportedUnits> m_hasValueForUnit;
   };
 
   static CSSCalcLength* create(const CSSCalcDictionary&, ExceptionState&);
   static CSSCalcLength* create(const CSSLengthValue* length, ExceptionState&) {
     return create(length);
   }
   static CSSCalcLength* create(const CSSLengthValue*);
   static CSSCalcLength* fromCSSValue(const CSSPrimitiveValue&);
 
+  static CSSCalcLength* fromLength(const Length&);
+
 #define GETTER_MACRO(name, type)    \
   double name(bool& isNull) {       \
     isNull = !m_unitData.has(type); \
     return m_unitData.get(type);    \
   }
 
   GETTER_MACRO(px, CSSPrimitiveValue::UnitType::Pixels)
   GETTER_MACRO(percent, CSSPrimitiveValue::UnitType::Percentage)
   GETTER_MACRO(em, CSSPrimitiveValue::UnitType::Ems)
   GETTER_MACRO(ex, CSSPrimitiveValue::UnitType::Exs)
@@ skipping 36 matching lines @@
   DEFINE_TYPE_CASTS(                                                   \
       CSSCalcLength, argumentType, value,                              \
       value->type() == CSSLengthValue::StyleValueType::CalcLengthType, \
       value.type() == CSSLengthValue::StyleValueType::CalcLengthType)
 
 DEFINE_CALC_LENGTH_TYPE_CASTS(CSSStyleValue);
 
 }  // namespace blink
 
 #endif