Error reporting for SVGLength and SVGLengthList

third_party/WebKit/Source/core/svg/SVGParsingError.h

Index: third_party/WebKit/Source/core/svg/SVGParsingError.h
diff --git a/third_party/WebKit/Source/core/svg/SVGParsingError.h b/third_party/WebKit/Source/core/svg/SVGParsingError.h
index 6eff092cb95b3520641966b80aad584201ae73d4..c66710afcbe299c03aa24ed38275905fec607c73 100644
--- a/third_party/WebKit/Source/core/svg/SVGParsingError.h
+++ b/third_party/WebKit/Source/core/svg/SVGParsingError.h
@@ -41,6 +41,7 @@ enum class SVGParseStatus {
     TrailingGarbage,
     ExpectedBoolean,
     ExpectedEnumeration,
+    ExpectedLength,
     ExpectedNumber,
 
     // Semantic errors
@@ -65,6 +66,9 @@ public:
     bool hasLocus() const { return m_locus != kNoLocus; }
     unsigned locus() const { return m_locus; }
 
+    // Move the locus of this error by |offset|, returning in a new error.
+    SVGParsingError offsetWith(size_t offset) const { return SVGParsingError(status(), offset + locus()); }
+
     // Generates a string describing this error for |value| in the context of
     // an <element, attribute>-name pair.
     String format(const String& tagName, const QualifiedName&, const AtomicString& value) const;