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" + "@" + "5122240c5e5c4d8da12c543d82b03d6089eb77c5",
   "v8/third_party/icu":
-    Var("git_url") + "/chromium/deps/icu.git" + "@" + "c3f79166089e5360c09e3053fce50e6e296c3204",
+    Var("git_url") + "/chromium/deps/icu.git" + "@" + "1b697da5c2c0112e2b70e7e75d3e3d985f464a8f",
   "v8/buildtools":
     Var("git_url") + "/chromium/buildtools.git" + "@" + "ecc8e253abac3b6186a97573871a084f4c0ca3ae",
   "v8/testing/gtest":
     Var("git_url") + "/external/googletest.git" + "@" + "23574bf2333f834ff665f894c97bef8a5b33a0a9",
   "v8/testing/gmock":
     Var("git_url") + "/external/googlemock.git" + "@" + "29763965ab52f24565299976b936d1265cb6a271",  # from svn revision 501
   "v8/tools/clang":
     Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "73ec8804ed395b0886d6edf82a9f33583f4a7902",
 }
 
@@ skipping 84 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"],
   },
 ]