Don't need to preserve CSS line-height property during editing operation

third_party/WebKit/Source/core/editing/EditingStyle.cpp

 /*
  * Copyright (C) 2007, 2008, 2009 Apple Computer, Inc.
  * Copyright (C) 2010, 2011 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 65 matching lines @@
 static const CSSPropertyID staticEditingProperties[] = {
     CSSPropertyBackgroundColor,
     CSSPropertyColor,
     CSSPropertyFontFamily,
     CSSPropertyFontSize,
     CSSPropertyFontStyle,
     CSSPropertyFontVariantLigatures,
     CSSPropertyFontVariantCaps,
     CSSPropertyFontWeight,
     CSSPropertyLetterSpacing,
-    CSSPropertyLineHeight,
     CSSPropertyOrphans,
     CSSPropertyTextAlign,
     // FIXME: CSSPropertyTextDecoration needs to be removed when CSS3 Text
     // Decoration feature is no longer experimental.
     CSSPropertyTextDecoration,
     CSSPropertyTextDecorationLine,
     CSSPropertyTextIndent,
     CSSPropertyTextTransform,
     CSSPropertyWhiteSpace,
     CSSPropertyWidows,
@@ skipping 1657 matching lines @@
 {
     for (Node* ancestor = node; ancestor; ancestor = ancestor->parentNode()) {
         CSSComputedStyleDeclaration* ancestorStyle = CSSComputedStyleDeclaration::create(ancestor);
         if (!hasTransparentBackgroundColor(ancestorStyle))
             return ancestorStyle->getPropertyCSSValue(CSSPropertyBackgroundColor);
     }
     return nullptr;
 }
 
 } // namespace blink