Update V8 DEPS.

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/67604e1..792a87c

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clan/+log/1f92f99..30c5a8b

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

Review-Url: https://codereview.chromium.org/2393083006
Cr-Commit-Position: refs/heads/master@{#40065}

DEPS

@@ -8,7 +8,7 @@ vars = {
 
 deps = {
   "v8/build":
-    Var("chromium_url") + "/chromium/src/build.git" + "@" + "67604e142e078a7797689afbfce9a04a432e943e",
+    Var("chromium_url") + "/chromium/src/build.git" + "@" + "792a87c1217536862f8fb3c845602b5d2362f539",
   "v8/tools/gyp":
     Var("chromium_url") + "/external/gyp.git" + "@" + "e7079f0e0e14108ab0dba58728ff219637458563",
   "v8/third_party/icu":
@@ -41,7 +41,7 @@ deps = {
   "v8/test/test262/harness":
     Var("chromium_url") + "/external/github.com/test262-utils/test262-harness-py.git" + "@" + "cbd968f54f7a95c6556d53ba852292a4c49d11d8",
   "v8/tools/clang":
-    Var("chromium_url") + "/chromium/src/tools/clang.git" + "@" + "1f92f999fc374a479e98a189ebdfe25c09484486",
+    Var("chromium_url") + "/chromium/src/tools/clang.git" + "@" + "30c5a8b3305ff4e597be9ec5b880d98e6fdaba65",
 }
 
 deps_os = {