Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/0d29448..3e5cfce

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

Change-Id: Id55df9c6550a29e463e64b6db43fbc25e661424d
Reviewed-on: https://chromium-review.googlesource.com/441604Reviewed-by: v8 autoroll <v8-autoroll@chromium.org>
Commit-Queue: v8 autoroll <v8-autoroll@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43127}

DEPS

@@ -8,7 +8,7 @@ vars = {
 
 deps = {
   "v8/build":
-    Var("chromium_url") + "/chromium/src/build.git" + "@" + "0d29448d5b612d8937a0c78f560d67e024848390",
+    Var("chromium_url") + "/chromium/src/build.git" + "@" + "3e5cfce8cf9eb4274e5e3f71ded1649bd5d5995a",
   "v8/tools/gyp":
     Var("chromium_url") + "/external/gyp.git" + "@" + "e7079f0e0e14108ab0dba58728ff219637458563",
   "v8/third_party/icu":