Refactor propagation of parsing errors for SVG attributes

third_party/WebKit/Source/core/svg/SVGIntegerOptionalInteger.cpp

Index: third_party/WebKit/Source/core/svg/SVGIntegerOptionalInteger.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGIntegerOptionalInteger.cpp b/third_party/WebKit/Source/core/svg/SVGIntegerOptionalInteger.cpp
index 16c02de8f26d2157fa3e0a979fec76d32104284f..b064168d72a4b5e2afdc0a79b1cd35c27b872d55 100644
--- a/third_party/WebKit/Source/core/svg/SVGIntegerOptionalInteger.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGIntegerOptionalInteger.cpp
@@ -76,16 +76,18 @@ String SVGIntegerOptionalInteger::valueAsString() const
     return String::number(m_firstInteger->value()) + " " + String::number(m_secondInteger->value());
 }
 
-void SVGIntegerOptionalInteger::setValueAsString(const String& value, ExceptionState& exceptionState)
+SVGParsingError SVGIntegerOptionalInteger::setValueAsString(const String& value)
 {
     float x, y;
+    SVGParsingError parseStatus = NoError;
     if (!parseNumberOptionalNumber(value, x, y)) {
-        exceptionState.throwDOMException(SyntaxError, "The value provided ('" + value + "') is invalid.");
+        parseStatus = ParsingAttributeFailedError;
         x = y = 0;
     }
 
     m_firstInteger->setValue(x);
     m_secondInteger->setValue(y);
+    return parseStatus;
 }
 
 void SVGIntegerOptionalInteger::add(PassRefPtrWillBeRawPtr<SVGPropertyBase> other, SVGElement*)