[CSSTypedOM] Computed StylePropertyMap use ComputedStyle for Lengths

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

Index: third_party/WebKit/Source/core/css/cssom/CSSCalcLength.h
diff --git a/third_party/WebKit/Source/core/css/cssom/CSSCalcLength.h b/third_party/WebKit/Source/core/css/cssom/CSSCalcLength.h
index 0fdac8391ae45a11e5e3ec7443c7f80f6e909da9..500b935a6711c856ba370d00ae49aea078a0e9b6 100644
--- a/third_party/WebKit/Source/core/css/cssom/CSSCalcLength.h
+++ b/third_party/WebKit/Source/core/css/cssom/CSSCalcLength.h
@@ -23,6 +23,8 @@ public:
         return create(length);
     }
 
+    static CSSCalcLength* fromLength(const Length&);
+
 #define GETTER_MACRO(name, type) \
     double name(bool& isNull) \
     { \
@@ -53,6 +55,7 @@ public:
     CSSValue* toCSSValue() const override;
 
     StyleValueType type() const override { return CalcLengthType; }
+
 protected:
     CSSLengthValue* addInternal(const CSSLengthValue* other) override;
     CSSLengthValue* subtractInternal(const CSSLengthValue* other) override;