Fix a broken DEPS file.

DEPS

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 vars = {
   # The dart_root is the root of our sdk checkout. This is normally
   # simply sdk, but if using special gclient specs it can be different.
   "dart_root": "sdk",
 
   # We use mirrors of all github repos to guarantee reproducibility and
@@ skipping 64 matching lines @@
   "logging_rev": "@85d83e002670545e9039ad3985f0018ab640e597",
   "markdown_rev": "@4aaadf3d940bb172e1f6285af4d2b1710d309982",
   "matcher_tag": "@0.12.0",
   "metatest_rev": "@e5aa8e4e19fc4188ac2f6d38368a47d8f07c3df1",
   "mime_rev": "@75890811d4af5af080351ba8a2853ad4c8df98dd",
   "mustache4dart_rev" : "@5724cfd85151e5b6b53ddcd3380daf188fe47f92",
   "oauth2_tag": "@1.0.0",
   "observatory_pub_packages_rev": "@a01235b5b71df27b602dae4676d0bf771cbe7fa2",
   "observe_rev": "@eee2b8ec34236fa46982575fbccff84f61202ac6",
   "package_config_rev": "@1.0.0",
-  "package_resolver": "@1.0.6",
+  "package_resolver_tag": "@1.0.6",
   "path_tag": "@1.3.6",
   "plugin_tag": "@0.2.0",
   "ply_rev": "@604b32590ffad5cbb82e4afef1d305512d06ae93",
   "pool_tag": "@1.2.1",
   "protobuf_tag": "@0.5.1+1",
   "pub_cache_tag": "@v0.1.0",
   "pub_rev": "@02443903ebaada11cad89386ad6d0202d2dbee38",
   "pub_semver_tag": "@1.3.0",
   "quiver_tag": "@0.21.4",
   "resource_rev":"@a49101ba2deb29c728acba6fb86000a8f730f4b1",
@@ skipping 153 matching lines @@
   Var("dart_root") + "/third_party/pkg/observe":
       (Var("github_mirror") % "observe") + Var("observe_rev"),
   Var("dart_root") + "/third_party/observatory_pub_packages":
      (Var("github_mirror") % "observatory_pub_packages")
       + Var("observatory_pub_packages_rev"),
   Var("dart_root") + "/third_party/pkg_tested/package_config":
       (Var("github_mirror") % "package_config") +
       Var("package_config_rev"),
   Var("dart_root") + "/third_party/pkg_tested/package_resolver":
       "https://github.com/dart-lang/package_resolver.git" +
-      Var("package_resolver_rev"),
+      Var("package_resolver_tag"),
   Var("dart_root") + "/third_party/pkg/path":
       (Var("github_mirror") % "path") + Var("path_tag"),
   Var("dart_root") + "/third_party/pkg/plugin":
       (Var("github_mirror") % "plugin") + Var("plugin_tag"),
   Var("dart_root") + "/third_party/pkg/pool":
       (Var("github_mirror") % "pool") + Var("pool_tag"),
   Var("dart_root") + "/third_party/pkg/protobuf":
       (Var("github_dartlang") % "dart-protobuf") + Var("protobuf_tag"),
   Var("dart_root") + "/third_party/pkg/pub_semver":
       (Var("github_mirror") % "pub_semver") + Var("pub_semver_tag"),
@@ skipping 211 matching lines @@
       "--extract",
       "-s",
       Var('dart_root') + "/third_party/clang.tar.gz.sha1",
     ],
   },
   {
     "pattern": ".",
     "action": ["python", Var("dart_root") + "/tools/gyp_dart.py"],
   },
 ]