Bug 84912 [KeyBindings] performance: Lots of garbage when editor gains/loses focus
build i0208 Not sure where to enter this report. Adding Tod and John to CC as they will be involve in performance work this release. I have the Platform/UI heap usage plug-in installed. I notice that when I switch focus from the editor to a view (e.g. Outline), the heap usage increases by a meg or 2. Putting focus back to the editor does the same. This happens with both the text editor and more prominatly with the Java editor. It doesn't matter if the view is docked or is a fast view.
bundles/org.eclipse.jface/src/org/eclipse/jface/bindings/BindingManager.java
* number of deletion markers.
	 * </p>
	 * 
	 * @return The map of triggers (<code>TriggerSequence</code>) to command
	 *         ids (<code>String</code>) which are currently active. This
	 *         value may be <code>null</code> if there are no active bindings,
	 *         and it may be empty.
	 */
	private final Map getActiveBindings() {
		if (activeBindings == null) {
			recomputeBindings();
		}
		return Collections.unmodifiableMap(activeBindings);
	}
	/**
	 * <p>
	 * Computes the bindings for the current state of the application, but
	 * disregarding the current contexts. This can be useful when trying to
	 * display all the possible bindings.
	 * </p>
	 * <p>
	 * This method completes in <code>O(n+mn)</code>, where <code>n</code>
	 * is the number of bindings and <code>m</code> is the number of deletion
	 * markers.
	 * </p>
	 * 
	 * @return A map of trigger (<code>TriggerSequence</code>) to bindings (
	 *         <code>Collection</code> containing <code>Binding</code>).
	 *         This map may be empty, but it is never <code>null</code>.
	 */