Add package:kernel to dartium DEPS.

tools/deps/dartium.deps/DEPS

Index: tools/deps/dartium.deps/DEPS
diff --git a/tools/deps/dartium.deps/DEPS b/tools/deps/dartium.deps/DEPS
index 00ba6412d4e3ae89edaeba374a4db05a1468cd2e..683d7ad3d3d039279004281652080cb8152dfbc9 100644
--- a/tools/deps/dartium.deps/DEPS
+++ b/tools/deps/dartium.deps/DEPS
@@ -40,6 +40,7 @@ vars.update({
   "http_parser_rev" : "@8b179e36aba985208e4c5fb15cfddd386b6370a4",
   "http_throttle_rev" : "@a81f08be942cdd608883c7b67795c12226abc235",
   "json_rpc_2_rev": "@a38eefd116d910199de205f962af92fed87c164c",
+  "kernel_rev": "@9509d282a62fe025f8d6242bb233b02e0a7fee04",
   "logging_rev": "@85d83e002670545e9039ad3985f0018ab640e597",
   "matcher_tag": "@0.12.0",
   "mime_rev": "@75890811d4af5af080351ba8a2853ad4c8df98dd",
@@ -109,6 +110,8 @@ deps.update({
       (Var("github_mirror") % "http_parser") + Var("http_parser_rev"),
   "src/dart/third_party/pkg/http_throttle":
       (Var("github_mirror") % "http_throttle") + Var("http_throttle_rev"),
+  "src/dart/third_party/pkg/kernel":
+      (Var("github_mirror") % "kernel") + Var("kernel_rev"),
   "src/dart/third_party/pkg/logging":
       (Var("github_mirror") % "logging") + Var("logging_rev"),
   "src/dart/third_party/pkg/matcher":