Explicitly enforce values size in feColorMatrix.

Source/core/svg/SVGFEColorMatrixElement.cpp

Index: Source/core/svg/SVGFEColorMatrixElement.cpp
diff --git a/Source/core/svg/SVGFEColorMatrixElement.cpp b/Source/core/svg/SVGFEColorMatrixElement.cpp
index ad659d2fb97672c7ce24838030e85707b0390b71..58f6cb35725f13657618c1f485b268b0e85b1760 100644
--- a/Source/core/svg/SVGFEColorMatrixElement.cpp
+++ b/Source/core/svg/SVGFEColorMatrixElement.cpp
@@ -77,8 +77,12 @@ bool SVGFEColorMatrixElement::setFilterEffectAttribute(FilterEffect* effect, con
     FEColorMatrix* colorMatrix = static_cast<FEColorMatrix*>(effect);
     if (attrName == SVGNames::typeAttr)
         return colorMatrix->setType(m_type->currentValue()->enumValue());
-    if (attrName == SVGNames::valuesAttr)
-        return colorMatrix->setValues(m_values->currentValue()->toFloatVector());
+    if (attrName == SVGNames::valuesAttr) {
+        Vector<float> values = m_values->currentValue()->toFloatVector();
+        if (values.size() == 20)

[pdr., 2015/04/10 20:59:39]

In a followup could you move this to be a named constant?

+            return colorMatrix->setValues(m_values->currentValue()->toFloatVector());
+        return false;
+    }
 
     ASSERT_NOT_REACHED();
     return false;