Hoist some pre-condition checks out of SVGAngle/SVGEnumeration

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

Index: third_party/WebKit/Source/core/svg/SVGEnumeration.h
diff --git a/third_party/WebKit/Source/core/svg/SVGEnumeration.h b/third_party/WebKit/Source/core/svg/SVGEnumeration.h
index 854d14bc1e4c591d7066527a1d27bb4d7737c1ee..62758d74f267c4dd135ba28c0f5bbba67f96a230 100644
--- a/third_party/WebKit/Source/core/svg/SVGEnumeration.h
+++ b/third_party/WebKit/Source/core/svg/SVGEnumeration.h
@@ -49,7 +49,7 @@ public:
     ~SVGEnumerationBase() override;
 
     unsigned short value() const { return m_value <= maxExposedEnumValue() ? m_value : 0; }
-    void setValue(unsigned short, ExceptionState&);
+    void setValue(unsigned short);
 
     // SVGPropertyBase:
     virtual PassRefPtrWillBeRawPtr<SVGEnumerationBase> clone() const = 0;
@@ -64,11 +64,11 @@ public:
 
     static AnimatedPropertyType classType() { return AnimatedEnumeration; }
 
-    // Ensure that |SVGAnimatedEnumerationBase::setBaseVal| is used instead of |SVGAnimatedProperty<SVGEnumerationBase>::setBaseVal|.
-    void setValue(unsigned short) { ASSERT_NOT_REACHED(); }
-
     static unsigned short valueOfLastEnum(const StringEntries& entries) { return entries.last().first; }
 
+    // This is the maximum value that is exposed as an IDL constant on the relevant interface.
+    unsigned short maxExposedEnumValue() const { return m_maxExposed; }
+
 protected:
     SVGEnumerationBase(unsigned short value, const StringEntries& entries, unsigned short maxExposed)
         : SVGPropertyBase(classType())
@@ -82,9 +82,6 @@ protected:
     // This assumes that |m_entries| are sorted.
     unsigned short maxInternalEnumValue() const { return valueOfLastEnum(m_entries); }
 
-    // This is the maximum value that is exposed as an IDL constant on the relevant interface.
-    unsigned short maxExposedEnumValue() const { return m_maxExposed; }
-
     // Used by SVGMarkerOrientEnumeration.
     virtual void notifyChange() { }