DomSanitizationService is not a function

You have to import and provide the BROWSER_SANITIZATION_PROVIDERS:

import { BROWSER_SANITIZATION_PROVIDERS, 
         SafeResourceUrl, 
         DomSanitizationService } from '@angular/platform-browser';

and in your providers array:

providers: [ParcelsService, BROWSER_SANITIZATION_PROVIDERS]

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UPDATE: for the final release things changed a little

import { __platform_browser_private__, 
         SafeResourceUrl, 
         DomSanitizer } from '@angular/platform-browser';

and add it to the providers like so:

providers: [ParcelsService, __platform_browser_private__, BROWSER_SANITIZATION_PROVIDERS]

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UPDATE FOR ANGULAR 4+: since Angular 4, there's some changes:

Now, you don't have to pass DomSanitizer to providers. You can import directly in your component and grab it in the component's constructor. Same goes for SafeResourceUrl.

Also:

• __platform_browser_private__ is no longer in @angular/platform-browser.
• BROWSER_SANITIZATION_PROVIDERS is no longer in @angular/platform-browser. It is now implemented [as a provider] into BrowserModule which can be imported from @angular/platform-browser.
• P.S. BrowserModule is usually added into your app.module module's imports array.