dart2js: add --preserve-uris flag.

R=blois@google.com, johnniwinther@google.com, nweiz@google.com

Review URL: https://codereview.chromium.org//582753002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41205 260f80e4-7a28-3924-810f-c04153c831b5
Revert "dart2js: add --preserve-uris flag."

This reverts commit r41205.

Review URL: https://codereview.chromium.org//666843004

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41206 260f80e4-7a28-3924-810f-c04153c831b5
Skip bad tests temporarily.

Review URL: https://codereview.chromium.org//652543003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41207 260f80e4-7a28-3924-810f-c04153c831b5
Suppress new Request type in dart:html

This is conflicting with the Request type in IDB.  Hiding it for now.  We may want to expose with a different name or factor out into a service worker library.

BUG=http://dartbug.com/21341
R=blois@google.com

Review URL: https://codereview.chromium.org//666543004

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@41208 260f80e4-7a28-3924-810f-c04153c831b5