Bug 317470 Minimized 'Outline' view has non-white background on restart
1. Minimize the 'Outline' view. 2. Close Eclipse. 3. Start Eclipse. 4. Restore the 'Outline' view. 5. Its background colour is grey instead of white.
bundles/org.eclipse.e4.ui.workbench.swt/src/org/eclipse/e4/ui/internal/workbench/swt/PartRenderingEngine.java
IEclipseContext parentContext = lclContext.getParent();
						Object child = parentContext
								.get(IContextConstants.ACTIVE_CHILD);
						if (child == lclContext) {
							parentContext.set(IContextConstants.ACTIVE_CHILD,
									null);
						}
						
						lclContext.setParent(newContext);
					}
				}
				ref.setCurSharedRef(null);
			}
		}
	}
	private void clearContext(MContext contextME) {
		MContext ctxt = (MContext) contextME;
		IEclipseContext lclContext = ctxt.getContext();
		if (lclContext != null) {
			IEclipseContext parentContext = lclContext.getParent();
			Object child = parentContext.get(IContextConstants.ACTIVE_CHILD);
			if (child == lclContext) {
				parentContext.set(IContextConstants.ACTIVE_CHILD, null);
			}
			ctxt.setContext(null);
			if (lclContext instanceof IDisposable) {
				((IDisposable) lclContext).dispose();
			}
		}
	}