Update V8 DEPS.

Rolling v8/base/trace_event/common to e40c41030f44cbd5b6f54081436620f43c3bb08a

Rolling v8/tools/clang to d53e60b4f31f03a6f719b13ed2de7389a4d89be4

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

Review URL: https://codereview.chromium.org/1748313002

Cr-Commit-Position: refs/heads/master@{#34374}

DEPS

@@ -14,7 +14,7 @@ deps = {
   "v8/buildtools":
     Var("git_url") + "/chromium/buildtools.git" + "@" + "14288a03a92856fe1fc296d39e6a25c2d83cd6cf",
   "v8/base/trace_event/common":
-    Var("git_url") + "/chromium/src/base/trace_event/common.git" + "@" + "81b7b6f531ad2375140b2a5f4d3a803e5ba2514c",
+    Var("git_url") + "/chromium/src/base/trace_event/common.git" + "@" + "e40c41030f44cbd5b6f54081436620f43c3bb08a",
   "v8/tools/swarming_client":
     Var('git_url') + '/external/swarming.client.git' + '@' + "a72f46e42dba1335e8001499b4621acad2d26728",
   "v8/testing/gtest":
@@ -29,7 +29,7 @@ deps = {
   "v8/test/test262/data":
     Var("git_url") + "/external/github.com/tc39/test262.git" + "@" + "57d3e2216fa86ad63b6c0a54914ba9dcbff96003",
   "v8/tools/clang":
-    Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "e67c4fe288f02e1d208961b757ff78d5b3e51782",
+    Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "d53e60b4f31f03a6f719b13ed2de7389a4d89be4",
 }
 
 deps_os = {