Point DEPS to mirrored repos of dart-lang packages, add term_glyph.

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.
 
 # IMPORTANT:
 # Before adding or updating dependencies, please review the documentation here:
 # https://github.com/dart-lang/sdk/wiki/Adding-and-Updating-Dependencies
 
 vars = {
   # The dart_root is the root of our sdk checkout. This is normally
@@ skipping 107 matching lines @@
   "shelf_tag": "@0.6.7+2",
   "shelf_web_socket_tag": "@0.2.1",
   "source_map_stack_trace_tag": "@1.1.4",
   "source_maps-0.9.4_rev": "@38524",
   "source_maps_tag": "@0.10.4",
   "source_span_tag": "@1.4.0",
   "stack_trace_tag": "@1.7.2",
   "stream_channel_tag": "@1.6.1",
   "string_scanner_tag": "@1.0.1",
   "sunflower_rev": "@879b704933413414679396b129f5dfa96f7a0b1e",
+  "term_glyph_tag": "@1.0.0",
   "test_reflective_loader_tag": "@0.1.0",
   "test_tag": "@0.12.18+1",
   "tuple_tag": "@v1.0.1",
   "typed_data_tag": "@1.1.3",
   "usage_tag": "@3.3.0",
   "utf_tag": "@0.9.0+3",
   "watcher_tag": "@0.9.7+3",
   "web_socket_channel_tag": "@1.0.4",
   "WebCore_rev": "@3c45690813c112373757bbef53de1602a62af609",
   "yaml_tag": "@2.1.12",
@@ skipping 31 matching lines @@
 
   Var("dart_root") + "/third_party/ply":
       Var("chromium_git") + "/chromium/src/third_party/ply.git" +
       Var("ply_rev"),
 
   Var("dart_root") + "/tools/idl_parser":
       Var("chromium_git") + "/chromium/src/tools/idl_parser.git" +
       Var("idl_parser_rev"),
 
   Var("dart_root") + "/third_party/WebCore":
-      "https://github.com/dart-lang/webcore.git" + Var("WebCore_rev"),
+      Var("github_mirror") + "webcore.git" + Var("WebCore_rev"),
 
   Var("dart_root") + "/third_party/tcmalloc/gperftools":
       Var('chromium_git') + '/external/github.com/gperftools/gperftools.git' +
       Var("gperftools_revision"),
 
   Var("dart_root") + "/third_party/pkg/args":
       Var("github_mirror") + "args.git" + Var("args_tag"),
   Var("dart_root") + "/third_party/pkg/async":
       Var("github_mirror") + "async.git" + Var("async_tag"),
   Var("dart_root") + "/third_party/pkg/barback":
@@ skipping 49 matching lines @@
       Var("github_mirror") + "linter.git" + Var("linter_tag"),
   Var("dart_root") + "/third_party/pkg/logging":
       Var("github_mirror") + "logging.git" + Var("logging_tag"),
   Var("dart_root") + "/third_party/pkg/markdown":
       Var("github_mirror") + "markdown.git" + Var("markdown_tag"),
   Var("dart_root") + "/third_party/pkg/matcher":
       Var("github_mirror") + "matcher.git" + Var("matcher_tag"),
   Var("dart_root") + "/third_party/pkg/mime":
       Var("github_mirror") + "mime.git" + Var("mime_rev"),
   Var("dart_root") + "/third_party/pkg/mockito":
-      "https://github.com/dart-lang/mockito.git" + Var("mockito_tag"),
+      Var("github_mirror") + mockito.git" + Var("mockito_tag"),
   Var("dart_root") + "/third_party/pkg/mustache4dart":
       Var("chromium_git")
       + "/external/github.com/valotas/mustache4dart.git"
       + Var("mustache4dart_tag"),
   Var("dart_root") + "/third_party/pkg/oauth2":
       Var("github_mirror") + "oauth2.git" + Var("oauth2_tag"),
   Var("dart_root") + "/third_party/observatory_pub_packages":
       Var("github_mirror") + "observatory_pub_packages.git"
       + Var("observatory_pub_packages_rev"),
   Var("dart_root") + "/third_party/pkg_tested/package_config":
       Var("github_mirror") + "package_config.git" +
       Var("package_config_tag"),
   Var("dart_root") + "/third_party/pkg_tested/package_resolver":
-      Var("github_mirror") + "package_resolver.git" + Var("package_resolver_tag"),
+      Var("github_mirror") + "package_resolver.git"
+      + Var("package_resolver_tag"),
   Var("dart_root") + "/third_party/pkg/path":
       Var("github_mirror") + "path.git" + Var("path_tag"),
   Var("dart_root") + "/third_party/pkg/plugin":
       Var("github_mirror") + "plugin.git" + Var("plugin_tag"),
   Var("dart_root") + "/third_party/pkg/pool":
       Var("github_mirror") + "pool.git" + Var("pool_tag"),
   Var("dart_root") + "/third_party/pkg/protobuf":
       Var("github_mirror") + "protobuf.git" + Var("protobuf_tag"),
   Var("dart_root") + "/third_party/pkg/pub_semver":
       Var("github_mirror") + "pub_semver.git" + Var("pub_semver_tag"),
@@ skipping 28 matching lines @@
       Var("github_mirror") + "stack_trace.git" + Var("stack_trace_tag"),
   Var("dart_root") + "/third_party/pkg/stream_channel":
       Var("github_mirror") + "stream_channel.git" +
       Var("stream_channel_tag"),
   Var("dart_root") + "/third_party/pkg/string_scanner":
       Var("github_mirror") + "string_scanner.git" +
       Var("string_scanner_tag"),
   Var("dart_root") + "/third_party/sunflower":
       Var("github_mirror") + "sample-sunflower.git" +
       Var("sunflower_rev"),
+  Var("dart_root") + "/third_party/pkg/term_glyph":
+      Var("github_mirror") + "term_glyph.git" + Var("term_glyph_tag"),
   Var("dart_root") + "/third_party/pkg/test":
       Var("github_mirror") + "test.git" + Var("test_tag"),
   Var("dart_root") + "/third_party/pkg/test_reflective_loader":
       Var("github_mirror") + "test_reflective_loader.git" +
       Var("test_reflective_loader_tag"),
   Var("dart_root") + "/third_party/pkg/tuple":
       Var("github_mirror") + "tuple.git" + Var("tuple_tag"),
   Var("dart_root") + "/third_party/pkg/typed_data":
       Var("github_mirror") + "typed_data.git" + Var("typed_data_tag"),
   Var("dart_root") + "/third_party/pkg/usage":
@@ skipping 153 matching lines @@
     # Update the Windows toolchain if necessary.
     'name': 'win_toolchain',
     'pattern': '.',
     'action': ['python', 'sdk/build/vs_toolchain.py', 'update'],
   },
   {
     "pattern": ".",
     "action": ["python", Var("dart_root") + "/tools/generate_buildfiles.py"],
   },
 ]