createFragmentFromMarkupWithContext() should use EphemeralRange.

third_party/WebKit/Source/core/editing/serializers/Serialization.cpp

Index: third_party/WebKit/Source/core/editing/serializers/Serialization.cpp
diff --git a/third_party/WebKit/Source/core/editing/serializers/Serialization.cpp b/third_party/WebKit/Source/core/editing/serializers/Serialization.cpp
index 5619d25c099c6d1bfb4f5ada3ac584a06c1d6ef3..fa369240ba9f3a5b84159761043146a217832b09 100644
--- a/third_party/WebKit/Source/core/editing/serializers/Serialization.cpp
+++ b/third_party/WebKit/Source/core/editing/serializers/Serialization.cpp
@@ -408,12 +408,11 @@ DocumentFragment* createFragmentFromMarkupWithContext(
   root->appendChild(taggedFragment);
   taggedDocument->appendChild(root);
 
-  Range* range = Range::create(
-      *taggedDocument,
+  const EphemeralRange range(
       Position::afterNode(nodeBeforeContext).parentAnchoredEquivalent(),
       Position::beforeNode(nodeAfterContext).parentAnchoredEquivalent());
 
-  Node* commonAncestor = range->commonAncestorContainer();
+  Node* commonAncestor = range.commonAncestorContainer();
   HTMLElement* specialCommonAncestor =
       ancestorToRetainStructureAndAppearanceWithNoLayoutObject(commonAncestor);