Remove some unused functions in core

Source/core/css/CSSPropertySourceData.cpp

 /*
  * Copyright (c) 2010 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 57 matching lines @@
 CSSPropertySourceData::CSSPropertySourceData(const CSSPropertySourceData& other)
     : name(other.name)
     , value(other.value)
     , important(other.important)
     , disabled(other.disabled)
     , parsedOk(other.parsedOk)
     , range(other.range)
 {
 }
 
-CSSPropertySourceData::CSSPropertySourceData()
-    : name("")
-    , value("")
-    , important(false)
-    , disabled(false)
-    , parsedOk(false)
-    , range(SourceRange(0, 0))
-{
-}
-
-String CSSPropertySourceData::toString() const
-{
-    DEFINE_STATIC_LOCAL(String, emptyValue, ("e"));
-    if (!name && value == emptyValue)
-        return String();
-
-    StringBuilder result;
-    if (disabled)
-        result.appendLiteral("/* ");
-    result.append(name);
-    result.appendLiteral(": ");
-    result.append(value);
-    if (important)
-        result.appendLiteral(" !important");
-    result.append(';');
-    if (disabled)
-        result.appendLiteral(" */");
-    return result.toString();
-}
-
-unsigned CSSPropertySourceData::hash() const
-{
-    return StringHash::hash(name) + 3 * StringHash::hash(value) + 7 * important + 13 * parsedOk + 31;
-}
-
 void CSSRuleSourceData::trace(Visitor* visitor)
 {
     visitor->trace(ruleHeaderRange);
     visitor->trace(ruleBodyRange);
     visitor->trace(selectorRanges);
     visitor->trace(styleSourceData);
     visitor->trace(childRules);
     visitor->trace(mediaSourceData);
 }
 
 } // namespace blink