Client side implementation of new /content-gs isolate protocol.

Replaces existing /content protocol. Also refactor Storage to
use Item class to represent uploaded files instead of tuples.

BUG=289670

Review URL: https://chromiumcodereview.appspot.com/25093003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/swarm_client@226265 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed