Update V8 DEPS.

Rolling v8/build to 87e063014aa0f343b15f5de495a28e5f8572bf8d

Rolling v8/tools/clang to 2ad431ac7823581e1f39c5b770704e1e1ca6cb32

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

Review-Url: https://codereview.chromium.org/2101893002
Cr-Commit-Position: refs/heads/master@{#37305}

DEPS

@@ -8,7 +8,7 @@ vars = {
 
 deps = {
   "v8/build":
-    Var("git_url") + "/chromium/src/build.git" + "@" + "95bb77009ecdeaa992b031b947142fbf7da57ed6",
+    Var("git_url") + "/chromium/src/build.git" + "@" + "87e063014aa0f343b15f5de495a28e5f8572bf8d",
   "v8/tools/gyp":
     Var("git_url") + "/external/gyp.git" + "@" + "35eafcd939515d51d19556c543f9cf97faf75ee6",
   "v8/third_party/icu":
@@ -33,7 +33,7 @@ deps = {
   "v8/test/test262/data":
     Var("git_url") + "/external/github.com/tc39/test262.git" + "@" + "88bc7fe7586f161201c5f14f55c9c489f82b1b67",
   "v8/tools/clang":
-    Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "cff206a88b16f784285391dcc4c444206f967024",
+    Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "2ad431ac7823581e1f39c5b770704e1e1ca6cb32",
 }
 
 deps_os = {