Revert of Update V8 DEPS.

DEPS

 # Note: The buildbots evaluate this file with CWD set to the parent
 # directory and assume that the root of the checkout is in ./v8/, so
 # all paths in here must match this assumption.
 
 vars = {
   "git_url": "https://chromium.googlesource.com",
 }
 
 deps = {
   "v8/build/gyp":
-    Var("git_url") + "/external/gyp.git" + "@" + "133eaf70b3720b7413017ef3f9c42f6811ef9347",
+    Var("git_url") + "/external/gyp.git" + "@" + "61259d585ce99d9de8b35188cd0025bdbcb58411",
   "v8/third_party/icu":
-    Var("git_url") + "/chromium/deps/icu.git" + "@" + "0d572d65aae621e13d6863fe470c9c8cee71043d",
+    Var("git_url") + "/chromium/deps/icu.git" + "@" + "6d3b55dfa17d9a597c064eeef7ceac18c73184b7",
   "v8/buildtools":
     Var("git_url") + "/chromium/buildtools.git" + "@" + "7274f1c726640bce4cd4c4198e1ee62a0b29bb89",
   "v8/base/trace_event/common":
     Var("git_url") + "/chromium/src/base/trace_event/common.git" + "@" + "e40c41030f44cbd5b6f54081436620f43c3bb08a",
   "v8/tools/swarming_client":
     Var('git_url') + '/external/swarming.client.git' + '@' + "df6e95e7669883c8fe9ef956c69a544154701a49",
   "v8/testing/gtest":
     Var("git_url") + "/external/github.com/google/googletest.git" + "@" + "6f8a66431cb592dad629028a50b3dd418a408c87",
   "v8/testing/gmock":
     Var("git_url") + "/external/googlemock.git" + "@" + "0421b6f358139f02e102c9c332ce19a33faf75be",
@@ skipping 192 matching lines @@
     'name': 'clang',
     'pattern': '.',
     'action': ['python', 'v8/tools/clang/scripts/update.py', '--if-needed'],
   },
   {
     # A change to a .gyp, .gypi, or to GYP itself should run the generator.
     "pattern": ".",
     "action": ["python", "v8/build/gyp_v8"],
   },
 ]