Add a forward declaration

git-svn-id: http://gtm-http-fetcher.googlecode.com/svn/trunk@132 b3aa69f0-f65c-a609-0a27-78855af037c1
Improve chunked upload retry behavior; improve user-agent generation to support multiple bundles

git-svn-id: http://gtm-http-fetcher.googlecode.com/svn/trunk@133 b3aa69f0-f65c-a609-0a27-78855af037c1
For chunked uploads, avoid asserting on non-empty initial response body.

git-svn-id: http://gtm-http-fetcher.googlecode.com/svn/trunk@134 b3aa69f0-f65c-a609-0a27-78855af037c1
Fix NSInputStream replacement for iOS 7 by forwarding respondsToSelector: to the captured stream object

git-svn-id: http://gtm-http-fetcher.googlecode.com/svn/trunk@135 b3aa69f0-f65c-a609-0a27-78855af037c1
Update fetcher unit tests to XCTest.

git-svn-id: http://gtm-http-fetcher.googlecode.com/svn/trunk@136 b3aa69f0-f65c-a609-0a27-78855af037c1