ASSERT -> DCHECK in core/editing.

third_party/WebKit/Source/core/editing/EphemeralRange.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EphemeralRange_h
 #define EphemeralRange_h
 
 #include "core/editing/Position.h"
 
 namespace blink {
@@ skipping 42 matching lines @@
     bool operator!=(const EphemeralRangeTemplate<Strategy>& other) const;
 
     Document& document() const;
     PositionTemplate<Strategy> startPosition() const;
     PositionTemplate<Strategy> endPosition() const;
 
     // Returns true if |m_startPositoin| == |m_endPosition| or |isNull()|.
     bool isCollapsed() const;
     bool isNull() const
     {
-        ASSERT(isValid());
+        DCHECK(isValid());
         return m_startPosition.isNull();
     }
     bool isNotNull() const { return !isNull(); }
 
     DEFINE_INLINE_TRACE()
     {
         visitor->trace(m_startPosition);
         visitor->trace(m_endPosition);
     }
 
@@ skipping 17 matching lines @@
 extern template class CORE_EXTERN_TEMPLATE_EXPORT EphemeralRangeTemplate<EditingInFlatTreeStrategy>;
 using EphemeralRangeInFlatTree = EphemeralRangeTemplate<EditingInFlatTreeStrategy>;
 
 // Returns a newly created |Range| object from |range| or |nullptr| if
 // |range.isNull()| returns true.
 CORE_EXPORT Range* createRange(const EphemeralRange& /* range */);
 
 } // namespace blink
 
 #endif