Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/device/IDisplayServer.java
{
	/**
	 * Lists out all resources that were previously logged explicitly by the
	 * <code>logCreation(Object)</code> method or those internally created by
	 * each of the resource creation methods. Once this method is invoked, all
	 * entries written into the log should be flushed.
	 */
	void debug( );
	/**
	 * Log creation of a resource for which leaks are to be tracked
	 * 
	 * @param o
	 *            A device-specific object being created
	 */
	void logCreation( Object o );
	/**
	 * Attempts to create a new font resource associated with a specific device
	 * for use in rendering or computations
	 * 
	 * @param fd
	 *            An font description for which a device specific resource is
	 *            being requested
	 * 
	 * @return A device specific font
	 */
	Object createFont( FontDefinition fd );
	/**
	 * Attempts to create a new color resource associated with a specific device