Bug 15604 Promote Fill arguments on method completion to a real preference
It is still in work in progress but it has become an established feature by now. Promote the preference to the code assist preference page.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/PreferencesConstants.java
* Enable / Disable the overview ruler. Boolean value.
	 */
	public final static String EDITOR_OVERVIEW_RULER= CompilationUnitEditor.OVERVIEW_RULER;
	/**
	 * Enable / Disable the line number ruler. Boolean value.
	 */
	public final static String EDITOR_LINE_NUMBER_RULER= JavaEditor.LINE_NUMBER_RULER;
	/**
	 * Color used for the line number ruler. RGB color encoded using PreferenceConverter.
	 * @see org.eclipse.jface.resource.StringConverter
	 * @see org.eclipse.jface.preference.PreferenceConverter
	 */
	public final static String EDITOR_LINE_NUMBER_RULER_COLOR= JavaEditor.LINE_NUMBER_COLOR;
	/**
	 * Color used for the linked positions (templates). RGB color encoded using PreferenceConverter.
	 * @see org.eclipse.jface.resource.StringConverter
	 * @see org.eclipse.jface.preference.PreferenceConverter
	 */
	public final static String EDITOR_LINKED_POSITION_COLOR= CompilationUnitEditor.LINKED_POSITION_COLOR;
	/**
	 * Color used for the text foreground. RGB color encoded using PreferenceConverter.
	 * @see org.eclipse.jface.resource.StringConverter
	 * @see org.eclipse.jface.preference.PreferenceConverter
	 */
	public final static String EDITOR_FOREGROUND_COLOR= AbstractTextEditor.PREFERENCE_COLOR_FOREGROUND;
	/**
	 * Default color used for text foreground. RGB color encoded using PreferenceConverter.
	 * @see org.eclipse.jface.resource.StringConverter
	 * @see org.eclipse.jface.preference.PreferenceConverter
	 */