Replace ASSERT and ASSERT_NOT_REACHED in core/style/

third_party/WebKit/Source/core/style/StyleDifference.h

 // Copyright 2014 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 StyleDifference_h
 #define StyleDifference_h
 
 #include "wtf/Allocator.h"
 #include "wtf/Assertions.h"
 
@@ skipping 62 matching lines @@
   }
 
   bool needsLayout() const { return m_layoutType != NoLayout; }
   void clearNeedsLayout() { m_layoutType = NoLayout; }
 
   // The offset of this positioned object has been updated.
   bool needsPositionedMovementLayout() const {
     return m_layoutType == PositionedMovement;
   }
   void setNeedsPositionedMovementLayout() {
-    ASSERT(!needsFullLayout());
+    DCHECK(!needsFullLayout());
     m_layoutType = PositionedMovement;
   }
 
   bool needsFullLayout() const { return m_layoutType == FullLayout; }
   void setNeedsFullLayout() { m_layoutType = FullLayout; }
 
   bool needsRecomputeOverflow() const { return m_recomputeOverflow; }
   void setNeedsRecomputeOverflow() { m_recomputeOverflow = true; }
 
   bool transformChanged() const {
@@ skipping 55 matching lines @@
   enum LayoutType { NoLayout = 0, PositionedMovement, FullLayout };
   unsigned m_layoutType : 2;
   unsigned m_recomputeOverflow : 1;
   unsigned m_propertySpecificDifferences : 7;
   unsigned m_scrollAnchorDisablingPropertyChanged : 1;
 };
 
 }  // namespace blink
 
 #endif  // StyleDifference_h