SVGFilterBuilder::getEffectById never return nullptr

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

Index: third_party/WebKit/Source/core/svg/SVGFETileElement.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGFETileElement.cpp b/third_party/WebKit/Source/core/svg/SVGFETileElement.cpp
index 07032bdc3628194e2872fc8f322378b4208bcc83..fc5c2eeeecf9c5b83ffe7a17ea5a0072dcd2a4aa 100644
--- a/third_party/WebKit/Source/core/svg/SVGFETileElement.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGFETileElement.cpp
@@ -57,9 +57,7 @@ void SVGFETileElement::svgAttributeChanged(const QualifiedName& attrName)
 PassRefPtrWillBeRawPtr<FilterEffect> SVGFETileElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
 {
     FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
-
-    if (!input1)
-        return nullptr;
+    ASSERT(input1);
 
     RefPtrWillBeRawPtr<FilterEffect> effect = FETile::create(filter);
     effect->inputEffects().append(input1);