Remove ASSERT_ARG().

third_party/WebKit/Source/core/css/CSSComputedStyleDeclaration.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
@@ skipping 385 matching lines @@
     return result.toString();
 }
 
 void CSSComputedStyleDeclaration::setCSSText(const String&, ExceptionState& exceptionState)
 {
     exceptionState.throwDOMException(NoModificationAllowedError, "These styles are computed, and therefore read-only.");
 }
 
 static CSSValueID cssIdentifierForFontSizeKeyword(int keywordSize)
 {
-    ASSERT_ARG(keywordSize, keywordSize);
-    ASSERT_ARG(keywordSize, keywordSize <= 8);
+    DCHECK_NE(keywordSize, 0);
+    DCHECK_LE(keywordSize, 8);
     return static_cast<CSSValueID>(CSSValueXxSmall + keywordSize - 1);
 }
 
 inline static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> zoomAdjustedPixelValue(double value, const ComputedStyle& style)
 {
     return cssValuePool().createValue(adjustFloatForAbsoluteZoom(value, style), CSSPrimitiveValue::UnitType::Pixels);
 }
 
 PassRefPtrWillBeRawPtr<CSSValue> CSSComputedStyleDeclaration::getFontSizeCSSValuePreferringKeyword() const
 {
@@ skipping 285 matching lines @@
     exceptionState.throwDOMException(NoModificationAllowedError, "These styles are computed, and therefore the '" + getPropertyNameString(id) + "' property is read-only.");
 }
 
 DEFINE_TRACE(CSSComputedStyleDeclaration)
 {
     visitor->trace(m_node);
     CSSStyleDeclaration::trace(visitor);
 }
 
 } // namespace blink