Refactor propagation of parsing errors for SVG attributes

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

Index: third_party/WebKit/Source/core/svg/SVGBoolean.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGBoolean.cpp b/third_party/WebKit/Source/core/svg/SVGBoolean.cpp
index a3237442baf48d2696a1d2d042a8a6c5f78b5a9f..5af4bd38a341d8eb63f0ffaca8d64bfd75010bcb 100644
--- a/third_party/WebKit/Source/core/svg/SVGBoolean.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGBoolean.cpp
@@ -30,9 +30,6 @@
 
 #include "core/svg/SVGBoolean.h"
 
-#include "bindings/core/v8/ExceptionState.h"
-#include "bindings/core/v8/ExceptionStatePlaceholder.h"
-#include "core/dom/ExceptionCode.h"
 #include "core/svg/SVGAnimationElement.h"
 
 namespace blink {
@@ -42,15 +39,17 @@ String SVGBoolean::valueAsString() const
     return m_value ? "true" : "false";
 }
 
-void SVGBoolean::setValueAsString(const String& value, ExceptionState& exceptionState)
+SVGParsingError SVGBoolean::setValueAsString(const String& value)
 {
     if (value == "true") {
         m_value = true;
-    } else if (value == "false") {
+        return NoError;
+    }
+    if (value == "false") {
         m_value = false;
-    } else {
-        exceptionState.throwDOMException(SyntaxError, "The value provided ('" + value + "') is invalid.");
+        return NoError;
     }
+    return ParsingAttributeFailedError;
 }
 
 void SVGBoolean::add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*)