Remove ASSERT_WITH_MESSAGE family.

third_party/WebKit/Source/platform/LayoutUnit.h

 /*
  * Copyright (c) 2012, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 797 matching lines @@
 
 inline LayoutUnit clampToLayoutUnit(LayoutUnit value, LayoutUnit min, LayoutUnit max)
 {
     if (value >= max)
         return max;
     if (value <= min)
         return min;
     return value;
 }
 
+inline std::ostream& operator<<(std::ostream& stream, const LayoutUnit& value)
+{
+    return stream << value.toDouble();
+}
+
 } // namespace blink
 
 #endif // LayoutUnit_h