[SVG] SVGAnimatedBoolean migration to new SVG property impl.

Source/core/svg/properties/NewSVGAnimatedProperty.cpp

Index: Source/core/svg/properties/NewSVGAnimatedProperty.cpp
diff --git a/Source/core/svg/properties/NewSVGAnimatedProperty.cpp b/Source/core/svg/properties/NewSVGAnimatedProperty.cpp
index 4065bcc03e218c3057ab14a7e9a75f73b88e8a4b..7268a0735a2d7838951b09a2f438470d823aa2fd 100644
--- a/Source/core/svg/properties/NewSVGAnimatedProperty.cpp
+++ b/Source/core/svg/properties/NewSVGAnimatedProperty.cpp
@@ -37,6 +37,8 @@ namespace WebCore {
 
 NewSVGAnimatedPropertyBase::NewSVGAnimatedPropertyBase(AnimatedPropertyType type, SVGElement* contextElement, const QualifiedName& attributeName)
     : m_type(type)
+    , m_isReadOnly(false)
+    , m_isAnimating(false)
     , m_contextElement(contextElement)
     , m_attributeName(attributeName)
 {
@@ -45,6 +47,29 @@ NewSVGAnimatedPropertyBase::NewSVGAnimatedPropertyBase(AnimatedPropertyType type
 
 NewSVGAnimatedPropertyBase::~NewSVGAnimatedPropertyBase()
 {
+    ASSERT(!isAnimating());
+}
+
+void NewSVGAnimatedPropertyBase::animationStarted()
+{
+    ASSERT(!isAnimating());
+    m_isAnimating = true;
+}
+
+void NewSVGAnimatedPropertyBase::animValWillChange()
+{
+    ASSERT(isAnimating());
+}
+
+void NewSVGAnimatedPropertyBase::animValDidChange()
+{
+    ASSERT(isAnimating());
+}
+
+void NewSVGAnimatedPropertyBase::animationEnded()
+{
+    ASSERT(isAnimating());
+    m_isAnimating = false;
 }
 
 void NewSVGAnimatedPropertyBase::synchronizeAttribute()