Bring in the latest watcher, collection, and async.

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 12 matching lines @@
 
   # Only use this temporarily while waiting for a mirror for a new package.
   "github_dartlang": "https://github.com/dart-lang/%s.git",
 
   "gyp_rev": "@6ee91ad8659871916f9aa840d42e1513befdf638",
   "co19_rev": "@3ed795ea02e022ef19c77cf1b6095b7c8f5584d0",
   "chromium_git": "https://chromium.googlesource.com",
 
   # Revisions of /third_party/* dependencies.
   "args_tag": "@0.13.4",
-  "async_tag": "@1.9.0",
+  "async_tag": "@1.10.0",
   "barback-0.13.0_rev": "@34853",
   "barback-0.14.0_rev": "@36398",
   "barback-0.14.1_rev": "@38525",
   "barback_tag" : "@0.15.2+7",
   "bazel_worker_tag": "@v0.1.0",
   "boolean_selector_tag" : "@1.0.0",
   "boringssl_rev" : "@daeafc22c66ad48f6b32fc8d3362eb9ba31b774e",
   "charcode_tag": "@1.1.0",
   "chrome_rev" : "@19997",
   "cli_util_tag" : "@0.0.1+2",
-  "collection_rev": "@f6135e6350c63eb3f4dd12953b8d4363faff16fc",
+  "collection_tag": "@1.6.0",
   "convert_tag": "@1.0.0",
   "crypto_tag" : "@1.1.0",
   "csslib_tag" : "@0.12.0",
   "dart2js_info_rev" : "@0a221eaf16aec3879c45719de656680ccb80d8a1",
   "dart_services_rev" : "@7aea2574e6f3924bf409a80afb8ad52aa2be4f97",
   "dart_style_tag": "@0.2.4",
   "dartdoc_tag" : "@v0.9.0",
   "dev_compiler_rev": "@ec95b3c45819f4d0de847588fdaa752a8e4651fb",
   "fixnum_tag": "@0.10.4",
   "func_rev": "@8d4aea75c21be2179cb00dc2b94a71414653094e",
@@ skipping 40 matching lines @@
   "source_span_tag": "@1.2.0",
   "stack_trace_tag": "@1.4.2",
   "stream_channel_tag": "@1.3.1",
   "string_scanner_tag": "@0.1.4",
   "sunflower_rev": "@879b704933413414679396b129f5dfa96f7a0b1e",
   "test_reflective_loader_tag": "@0.0.3",
   "test_tag": "@0.12.12",
   "typed_data_tag": "@1.1.2",
   "usage_rev": "@b5080dac0d26a5609b266f8fdb0d053bc4c1c638",
   "utf_rev": "@1f55027068759e2d52f2c12de6a57cce5f3c5ee6",
-  "watcher_tag": "@0.9.7",
+  "watcher_tag": "@0.9.7+2",
   "web_components_rev": "@6349e09f9118dce7ae1b309af5763745e25a9d61",
   "web_socket_channel_tag": "@1.0.0",
   "WebCore_rev": "@a86fe28efadcfc781f836037a80f27e22a5dad17",
   "when_tag": "@0.2.0+2",
   "which_tag": "@0.1.3+1",
   "yaml_tag": "@2.1.5",
   "zlib_rev": "@c3d0a6190f2f8c924a05ab6cc97b8f975bddd33f",
 }
 
 deps = {
@@ skipping 40 matching lines @@
   Var("dart_root") + "/third_party/pkg/bazel_worker":
       (Var("github_dartlang") % "bazel_worker") + Var("bazel_worker_tag"),
   Var("dart_root") + "/third_party/pkg/boolean_selector":
       (Var("github_dartlang") % "boolean_selector") +
       Var("boolean_selector_tag"),
   Var("dart_root") + "/third_party/pkg/charcode":
       (Var("github_mirror") % "charcode") + Var("charcode_tag"),
   Var("dart_root") + "/third_party/pkg/cli_util":
       (Var("github_mirror") % "cli_util") + Var("cli_util_tag"),
   Var("dart_root") + "/third_party/pkg/collection":
-      (Var("github_mirror") % "collection") + Var("collection_rev"),
+      (Var("github_mirror") % "collection") + Var("collection_tag"),
   Var("dart_root") + "/third_party/pkg/convert":
       "https://github.com/dart-lang/convert.git" + Var("convert_tag"),
   Var("dart_root") + "/third_party/pkg/crypto":
       (Var("github_mirror") % "crypto") + Var("crypto_tag"),
   Var("dart_root") + "/third_party/pkg/csslib":
       (Var("github_mirror") % "csslib") + Var("csslib_tag"),
   Var("dart_root") + "/third_party/dart-services":
       (Var("github_mirror") % "dart-services") +
       Var("dart_services_rev"),
   Var("dart_root") + "/third_party/pkg_tested/dart_style":
@@ skipping 276 matching lines @@
       "--extract",
       "-s",
       Var('dart_root') + "/third_party/clang.tar.gz.sha1",
     ],
   },
   {
     "pattern": ".",
     "action": ["python", Var("dart_root") + "/tools/gyp_dart.py"],
   },
 ]