Get rid of wrong assumption in reconcileTextDecorationProperties()

third_party/WebKit/Source/core/editing/EditingStyle.cpp

Index: third_party/WebKit/Source/core/editing/EditingStyle.cpp
diff --git a/third_party/WebKit/Source/core/editing/EditingStyle.cpp b/third_party/WebKit/Source/core/editing/EditingStyle.cpp
index 1f67ac5d878431c45a118778b5025b5744bca78e..6bbf51cc69d97ecc102cda3244e071b512a9402f 100644
--- a/third_party/WebKit/Source/core/editing/EditingStyle.cpp
+++ b/third_party/WebKit/Source/core/editing/EditingStyle.cpp
@@ -1709,9 +1709,8 @@ static void reconcileTextDecorationProperties(MutableStylePropertySet* style) {
       style->getPropertyCSSValue(CSSPropertyWebkitTextDecorationsInEffect);
   const CSSValue* textDecoration =
       style->getPropertyCSSValue(textDecorationPropertyForEditing());
-  // We shouldn't have both text-decoration and
-  // -webkit-text-decorations-in-effect because that wouldn't make sense.
-  DCHECK(!textDecorationsInEffect || !textDecoration);
+  // "LayoutTests/editing/execCommand/insert-list-and-strikethrough.html" makes
+  // both |textDecorationsInEffect| and |textDecoration| non-null.
   if (textDecorationsInEffect) {
     style->setProperty(textDecorationPropertyForEditing(),
                        textDecorationsInEffect->cssText());