Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/9d6666d..41581bc

Rolling v8/tools/swarming_client: https://chromium.googlesource.com/external/swarming.client/+log/5c4eed8..af6b06c

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Change-Id: If888be1ca55a3eda40e6e6dd7e38f351d3b3ab6d
Reviewed-on: https://chromium-review.googlesource.com/527359Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45799}

DEPS

@@ -8,7 +8,7 @@ vars = {
 
 deps = {
   "v8/build":
-    Var("chromium_url") + "/chromium/src/build.git" + "@" + "9d6666d50f168886cae4990af7a44d8cd1fa1a9d",
+    Var("chromium_url") + "/chromium/src/build.git" + "@" + "41581bcc04f3a3e20b96092ef448e2bc5404a139",
   "v8/tools/gyp":
     Var("chromium_url") + "/external/gyp.git" + "@" + "eb296f67da078ec01f5e3a9ea9cdc6d26d680161",
   "v8/third_party/icu":
@@ -24,7 +24,7 @@ deps = {
   "v8/third_party/markupsafe":
     Var("chromium_url") + "/chromium/src/third_party/markupsafe.git" + "@" + "8f45f5cfa0009d2a70589bcda0349b8cb2b72783",
   "v8/tools/swarming_client":
-    Var('chromium_url') + '/external/swarming.client.git' + '@' + "5c4eed8883548ba78c886ef26986b81b1be723a4",
+    Var('chromium_url') + '/external/swarming.client.git' + '@' + "af6b06ca68ba7a618024f28856418296a9acf375",
   "v8/testing/gtest":
     Var("chromium_url") + "/external/github.com/google/googletest.git" + "@" + "6f8a66431cb592dad629028a50b3dd418a408c87",
   "v8/testing/gmock":