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

deps/multivm.deps/DEPS

 import gclient_utils
 import os
 
 path = gclient_utils.FindGclientRoot(os.getcwd())
 execfile(os.path.join(path, 'multivm.deps', 'DEPS.chromium')) # Include proper Chromium DEPS.
 
 # Now we need to override some settings and add some new ones.
 
 vars.update({
   "chromium_url": "http://src.chromium.org/svn",
   "multivm_base": "http://src.chromium.org",
   "multivm_chromium_commit": "4423aeda2e5bcfef62cea3b08be9175f81bf5499",
   "multivm_chromium_position": "293090",
-  "chromium_base_position":
-      '{"Windows": "293090", ' +
-      ' "Darwin": "293090", ' +
-      ' "Linux": "293090"}',
+  "chromium_base_position": "293090",
   "dart_tools_branch": "/branches/bleeding_edge/dart/tools",
   "dart_tools_revision": "39741",
   "multivm_blink_branch": "/blink/branches/dart/multivm",
   "multivm_blink_revision": "181476",
 })
 
 def massage_deps(deps):
   for key, value in deps.items():
     if value is None: continue
 
@@ skipping 42 matching lines @@
 
 hooks.append({
   # Set the revision for a lazily downloaded reference build of chromium,
   # with which to run perf tests.
   'name': 'set_reference_build',
   'pattern': '.',
   'action': ['python',
              'src/dart/tools/bots/set_reference_build_revision.py',
              Var('chromium_base_position')],
 })