Don't pull src/dart as part of dartium checkou

tools/deps/dartium.deps/DEPS

 import gclient_utils
 import os
 
 path = gclient_utils.FindGclientRoot(os.getcwd())
 execfile(os.path.join(path, 'src', 'dart', 'tools', 'deps', '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",
@@ skipping 62 matching lines @@
 
 deps.update({
   "src":
     Var("chromium_git") + "/dart/dartium/src.git" + "@" +
         Var("dartium_chromium_commit"),
 
   "src/third_party/WebKit":
     Var("dartium_base") + Var("dartium_webkit_branch") + "@" +
         Var("dartium_webkit_revision"),
 
-  "src/dart":
-      "git@github.com:dart-lang/sdk.git",
-
   # Needed to run pub.
   "src/dart/third_party/pkg/barback":
       "https://github.com/dart-lang/barback.git" + Var("barback_rev"),
   "src/dart/third_party/pkg/crypto":
       "https://github.com/dart-lang/crypto.git" + Var("crypto_rev"),
   "src/dart/third_party/pkg/collection":
       "https://github.com/dart-lang/collection.git" + Var("collection_rev"),
   "src/dart/third_party/pkg/glob":
       "https://github.com/dart-lang/glob.git" + Var("glob_rev"),
   "src/dart/third_party/pkg/json_rpc_2":
@@ skipping 99 matching lines @@
 hooks.append({
   # Peg the blink version number in LASTCHANGE.blink to be the upstream
   # webkit_revision number so that chrome remote devtools pulls assets from
   # the right place.
   "name": "lastchange",
   "pattern": ".",
   "action": ["python", "-c",
       "f=open('src/build/util/LASTCHANGE.blink','w'); f.write('LASTCHANGE=" +
       Var('webkit_revision') + "\\n')" ],
 })