Remove reference to non-existent disabled icons in org.eclipse.help.ui

The paths to disabled icons have recently been replaced with paths to
SVGs even though they do not exist. This change completely removes the
usage of explicitly disabled icons and replaces it with on-the-fly
generated disabled icons.

Author: HeikoKlare

ua/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/IHelpUIConstants.java

@@ -50,8 +50,6 @@ public interface IHelpUIConstants {
 	public static final String IMAGE_HIGHLIGHT = "elcl16/highlight.svg"; //$NON-NLS-1$
 	public static final String IMAGE_MAGNIFY = "elcl16/magnify_font.svg"; //$NON-NLS-1$
 	public static final String IMAGE_REDUCE = "elcl16/reduce_font.svg"; //$NON-NLS-1$
-	public static final String IMAGE_D_MAGNIFY = "dlcl16/magnify_font.svg"; //$NON-NLS-1$
-	public static final String IMAGE_D_REDUCE = "dlcl16/reduce_font.svg"; //$NON-NLS-1$
 	public static final String IMAGE_COLLAPSE_ALL = "elcl16/collapseall.svg"; //$NON-NLS-1$
 	public static final String IMAGE_CLOSE = "elcl16/close.svg"; //$NON-NLS-1$
 	public static final String IMAGE_CLOSE_HOT = "elcl16/close_hot.svg"; //$NON-NLS-1$

ua/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/BrowserPart.java

@@ -305,8 +305,6 @@ public void run() {
 		magnifyAction.setText(Messages.BrowserPart_magnifyTooltip);
 		magnifyAction.setImageDescriptor(HelpUIResources
 				.getImageDescriptor(IHelpUIConstants.IMAGE_MAGNIFY));
-		magnifyAction.setDisabledImageDescriptor(HelpUIResources
-				.getImageDescriptor(IHelpUIConstants.IMAGE_D_MAGNIFY));
 
 		reduceAction = new Action() {
 
@@ -319,8 +317,6 @@ public void run() {
 		reduceAction.setText(Messages.BrowserPart_reduceTooltip);
 		reduceAction
 				.setImageDescriptor(HelpUIResources.getImageDescriptor(IHelpUIConstants.IMAGE_REDUCE));
-		reduceAction.setDisabledImageDescriptor(HelpUIResources
-				.getImageDescriptor(IHelpUIConstants.IMAGE_D_REDUCE));
 		menuManager.add(new Separator());
 		menuManager.add(reduceAction);
 		menuManager.add(magnifyAction);