Bug 318944 CSSSWTEngineImpl leaks memory
CSSSWTEngineImpl stores too many element contexts. In a memory snapshot, the HashMap size was 15559. This is most probably a leak.
bundles/org.eclipse.e4.ui.css.core/src/org/eclipse/e4/ui/css/core/impl/engine/AbstractCSSEngine.java
return styleDeclaration;
	}
	
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.e4.ui.core.css.engine.CSSEngine#parsePropertyValue(java.io.Reader)
	 */
	public CSSValue parsePropertyValue(Reader reader) throws IOException {
		InputSource source = new InputSource();
		source.setCharacterStream(reader);
		return parsePropertyValue(source);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.e4.ui.core.css.engine.CSSEngine#parsePropertyValue(java.io.InputStream)
	 */
	public CSSValue parsePropertyValue(InputStream stream) throws IOException {
		InputSource source = new InputSource();
		source.setByteStream(stream);
		return parsePropertyValue(source);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.e4.ui.core.css.engine.CSSEngine#parsePropertyValue(java.lang.String)
	 */
	public CSSValue parsePropertyValue(String value) throws IOException {
		Reader reader = new StringReader(value);