signedRequest.getOAuthArguments().setSignOwner(true);
signedRequest.getOAuthArguments().setSignViewer(true);
fetcher = new DefaultRequestPipelineTest.FakeHttpFetcher();
oauth = new DefaultRequestPipelineTest.FakeOAuthRequestProvider();
requestPipeline = new DefaultRequestPipeline(fetcher, cache, oauth, new NoOpImageRewriter(),
service);
}