Revert "Revert "Upgrade to 5.0.71.48"" DO NOT MERGE

This reverts commit f2e3994fa5148cc3d9946666f0b0596290192b0e,
and updates the x64 makefile properly so it doesn't break that
build.

FPIIM-449

Change-Id: Ib83e35bfbae6af627451c926a9650ec57c045605
(cherry picked from commit 109988c7ccb6f3fd1a58574fa3dfb88beaef6632)
diff --git a/DEPS b/DEPS
index 07b11a4..5f26e91 100644
--- a/DEPS
+++ b/DEPS
@@ -8,15 +8,15 @@
 
 deps = {
   "v8/build/gyp":
-    Var("git_url") + "/external/gyp.git" + "@" + "b85ad3e578da830377dbc1843aa4fbc5af17a192",
+    Var("git_url") + "/external/gyp.git" + "@" + "ed163ce233f76a950dce1751ac851dbe4b1c00cc",
   "v8/third_party/icu":
-    Var("git_url") + "/chromium/deps/icu.git" + "@" + "8d342a405be5ae8aacb1e16f0bc31c3a4fbf26a2",
+    Var("git_url") + "/chromium/deps/icu.git" + "@" + "e466f6ac8f60bb9697af4a91c6911c6fc4aec95f",
   "v8/buildtools":
-    Var("git_url") + "/chromium/buildtools.git" + "@" + "0f8e6e4b126ee88137930a0ae4776c4741808740",
+    Var("git_url") + "/chromium/buildtools.git" + "@" + "97b5c485707335dd2952c05bf11412ada3f4fb6f",
   "v8/base/trace_event/common":
-    Var("git_url") + "/chromium/src/base/trace_event/common.git" + "@" + "d83d44b13d07c2fd0a40101a7deef9b93b841732",
+    Var("git_url") + "/chromium/src/base/trace_event/common.git" + "@" + "4b09207e447ae5bd34643b4c6321bee7b76d35f9",
   "v8/tools/swarming_client":
-    Var('git_url') + '/external/swarming.client.git' + '@' + "9cdd76171e517a430a72dcd7d66ade67e109aa00",
+    Var('git_url') + '/external/swarming.client.git' + '@' + "0b908f18767c8304dc089454bc1c91755d21f1f5",
   "v8/testing/gtest":
     Var("git_url") + "/external/github.com/google/googletest.git" + "@" + "6f8a66431cb592dad629028a50b3dd418a408c87",
   "v8/testing/gmock":
@@ -27,9 +27,9 @@
     Var("git_url") + "/v8/deps/third_party/mozilla-tests.git" + "@" + "f6c578a10ea707b1a8ab0b88943fe5115ce2b9be",
   "v8/test/simdjs/data": Var("git_url") + "/external/github.com/tc39/ecmascript_simd.git" + "@" + "c8ef63c728283debc25891123eb00482fee4b8cd",
   "v8/test/test262/data":
-    Var("git_url") + "/external/github.com/tc39/test262.git" + "@" + "67ba34b03a46bac4254223ae25f42c7b959540f0",
+    Var("git_url") + "/external/github.com/tc39/test262.git" + "@" + "738a24b109f3fa71be44d5c3701d73141d494510",
   "v8/tools/clang":
-    Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "24e8c1c92fe54ef8ed7651b5850c056983354a4a",
+    Var("git_url") + "/chromium/src/tools/clang.git" + "@" + "a8adb78c8eda9bddb2aa9c51f3fee60296de1ad4",
 }
 
 deps_os = {
@@ -102,6 +102,22 @@
                 "-s", "v8/buildtools/linux64/clang-format.sha1",
     ],
   },
+  {
+    'name': 'gcmole',
+    'pattern': '.',
+    'action': [
+        'python',
+        'v8/tools/gcmole/download_gcmole_tools.py',
+    ],
+  },
+  {
+    'name': 'jsfunfuzz',
+    'pattern': '.',
+    'action': [
+        'python',
+        'v8/tools/jsfunfuzz/download_jsfunfuzz.py',
+    ],
+  },
   # Pull luci-go binaries (isolate, swarming) using checked-in hashes.
   {
     'name': 'luci-go_win',
@@ -136,6 +152,40 @@
                 '-d', 'v8/tools/luci-go/linux64',
     ],
   },
+  # Pull GN using checked-in hashes.
+  {
+    "name": "gn_win",
+    "pattern": ".",
+    "action": [ "download_from_google_storage",
+                "--no_resume",
+                "--platform=win32",
+                "--no_auth",
+                "--bucket", "chromium-gn",
+                "-s", "v8/buildtools/win/gn.exe.sha1",
+    ],
+  },
+  {
+    "name": "gn_mac",
+    "pattern": ".",
+    "action": [ "download_from_google_storage",
+                "--no_resume",
+                "--platform=darwin",
+                "--no_auth",
+                "--bucket", "chromium-gn",
+                "-s", "v8/buildtools/mac/gn.sha1",
+    ],
+  },
+  {
+    "name": "gn_linux",
+    "pattern": ".",
+    "action": [ "download_from_google_storage",
+                "--no_resume",
+                "--platform=linux*",
+                "--no_auth",
+                "--bucket", "chromium-gn",
+                "-s", "v8/buildtools/linux64/gn.sha1",
+    ],
+  },
   {
     # Update the Windows toolchain if necessary.
     'name': 'win_toolchain',