Made StylePropertySet::getPropertyCSSValue return a const CSSValue*

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

 /*
  * Copyright (C) 2013 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 94 matching lines @@
     FontFace* fontFace = new FontFace(context, family, descriptors);
     fontFace->initCSSFontFace(static_cast<const unsigned char*>(source->baseAddress()), source->byteLength());
     return fontFace;
 }
 
 FontFace* FontFace::create(Document* document, const StyleRuleFontFace* fontFaceRule)
 {
     const StylePropertySet& properties = fontFaceRule->properties();
 
     // Obtain the font-family property and the src property. Both must be defined.
-    CSSValue* family = properties.getPropertyCSSValue(CSSPropertyFontFamily);
+    const CSSValue* family = properties.getPropertyCSSValue(CSSPropertyFontFamily);
     if (!family || (!family->isFontFamilyValue() && !family->isPrimitiveValue()))
         return nullptr;
-    CSSValue* src = properties.getPropertyCSSValue(CSSPropertySrc);
+    const CSSValue* src = properties.getPropertyCSSValue(CSSPropertySrc);
     if (!src || !src->isValueList())
         return nullptr;
 
     FontFace* fontFace = new FontFace(document);
 
     if (fontFace->setFamilyValue(*family)
         && fontFace->setPropertyFromStyle(properties, CSSPropertyFontStyle)
         && fontFace->setPropertyFromStyle(properties, CSSPropertyFontWeight)
         && fontFace->setPropertyFromStyle(properties, CSSPropertyFontStretch)
         && fontFace->setPropertyFromStyle(properties, CSSPropertyUnicodeRange)
@@ skipping 492 matching lines @@
 {
     return m_cssFontFace->hadBlankText();
 }
 
 bool FontFace::hasPendingActivity() const
 {
     return m_status == Loading && getExecutionContext() && !getExecutionContext()->activeDOMObjectsAreStopped();
 }
 
 } // namespace blink