Update V8 DEPS.

Rolling v8/third_party/icu to f1ad7f9ba957571dc692ea3e187612c685615e19

Rolling v8/tools/clang to dbc958e1b51949ca815ca31a8f9bf4a760ca1d35

TBR=machenbach@chromium.org

Review URL: https://codereview.chromium.org/1160693002

Cr-Commit-Position: refs/heads/master@{#28645}

DEPS

@@ -10,7 +10,7 @@ deps = {
   "v8/build/gyp":
     Var("git_url") + "/external/gyp.git" + "@" + "0bb67471bca068996e15b56738fa4824dfa19de0",
   "v8/third_party/icu":
-    Var("git_url") + "/chromium/deps/icu.git" + "@" + "5788e2736b3bc642994b6351a6096124895afa01",
+    Var("git_url") + "/chromium/deps/icu.git" + "@" + "f1ad7f9ba957571dc692ea3e187612c685615e19",
   "v8/buildtools":
     Var("git_url") + "/chromium/buildtools.git" + "@" + "dc487f429cb90cac92ec7a9cd9d49db13648064d",
   "v8/testing/gtest":
@@ -18,7 +18,7 @@ deps = {
   "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" + "@" + "c8d44a19b3bc34fe17b9b0361edebee4b9a70fdb",
+    Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "dbc958e1b51949ca815ca31a8f9bf4a760ca1d35",
 }
 
 deps_os = {