Fixup deps files and VERSION file on the 1.4 branch

deps/dartium.deps/DEPS

 import gclient_utils
 import os
 
 path = gclient_utils.FindGclientRoot(os.getcwd())
 execfile(os.path.join(path, 'dartium.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",
   "dartium_base": "http://src.chromium.org",
   "dartium_chromium_branch": "/chrome/branches/dart/1847/src",
   "dartium_chromium_revision": "264987",
   "chromium_base_revision": "251904",
-  "dart_branch": "/trunk",
+  "dart_branch": "/branches/1.4",
   "dartium_webkit_branch": "/blink/branches/dart/1847",
   "dartium_webkit_revision": "173334",
   "bootstrap_css_rev" : "@28387",
 
   "co19_rev": "@722",
 })
 
 def massage_deps(deps):
   for key, value in deps.items():
     if value is None: continue
@@ skipping 49 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_revision')],
 })