Hoist some pre-condition checks out of SVGAngle/SVGEnumeration

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

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 50 matching lines @@
 {
     for (const auto& entry : m_entries) {
         if (m_value == entry.first)
             return entry.second;
     }
 
     ASSERT(m_value < maxInternalEnumValue());
     return emptyString();
 }
 
-void SVGEnumerationBase::setValue(unsigned short value, ExceptionState& exceptionState)
+void SVGEnumerationBase::setValue(unsigned short value)
 {
-    if (!value) {
-        exceptionState.throwTypeError("The enumeration value provided is 0, which is not settable.");
-        return;
-    }
-
-    if (value > maxExposedEnumValue()) {
-        exceptionState.throwTypeError("The enumeration value provided (" + String::number(value) + ") is larger than the largest allowed value (" + String::number(maxExposedEnumValue()) + ").");
-        return;
-    }
-
     m_value = value;
     notifyChange();
 }
 
 void SVGEnumerationBase::setValueAsString(const String& string, ExceptionState& exceptionState)
 {
     for (const auto& entry : m_entries) {
         if (string == entry.second) {
             // 0 corresponds to _UNKNOWN enumeration values, and should not be settable.
             ASSERT(entry.first);
@@ skipping 21 matching lines @@
     animationElement->animateDiscreteType<unsigned short>(percentage, fromEnumeration, toEnumeration, m_value);
 }
 
 float SVGEnumerationBase::calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*)
 {
     // No paced animations for boolean.
     return -1;
 }
 
 }