Revert change r37732. Remove copies of scripts from old location.

Revert change r37732, using hashes rather than revision numbers for archived chromium builds. Remove copies of scripts from old location.

R=ricow@google.com

Committed: https://code.google.com/p/dart/source/detail?r=39950

[Bill Hesse, 2014-09-08 08:21:26]

whesse@google.com changed reviewers:
+ ricow@google.com

[Bill Hesse, 2014-09-08 08:21:27]

The current versions of the scripts are in tools/bots.  These ones in
tools/dartium are outdated and unused.

[ricow1, 2014-09-08 08:22:23]

https://codereview.chromium.org/553823002/diff/1/deps/multivm.deps/DEPS
File deps/multivm.deps/DEPS (right):

https://codereview.chromium.org/553823002/diff/1/deps/multivm.deps/DEPS#newco...
deps/multivm.deps/DEPS:15: '{"Windows": "293094", ' +
why?

[Bill Hesse, 2014-09-08 09:41:28]

Changed the code back to the way it was before using platform-specific hashes. 
Now the base position only needs to be updated to a position number/revision
number.

Only if there is no archived build within 100 revisions will there be a problem
getting the reference build.

[ricow1, 2014-09-08 10:33:59]

lgtm

[Bill Hesse, 2014-09-08 10:34:16]

Committed patchset #2 (id:20001) manually as r39950 (presubmit successful).