Switching IRT to be built inside the chrome build.

DEPS

Index: DEPS
===================================================================
--- DEPS	(revision 97323)
+++ DEPS	(working copy)
@@ -7,10 +7,6 @@
   "webkit_revision": "93234",
   "chromium_git": "http://git.chromium.org/git",
   "swig_revision": "69281",
-  # These hashes need to be updated when nacl_revision is changed.
-  # After changing nacl_revision, run 'gclient runhooks' to get the new values.
-  "nacl_irt_hash_x86_32": "96f8b8602ee43b05898fb22302fb5eb2dded4d5c",
-  "nacl_irt_hash_x86_64": "9b04a640e6216aea7153654dee1ab264fb537478",
   "nacl_revision": "6459",
   # After changing nacl_revision, run 'glient sync' and check native_client/DEPS
   # to update other nacl_*_revision's.
@@ -418,15 +414,6 @@
     "action": ["python", "src/build/gyp_chromium"],
   },
   {
-    # This downloads binaries for Native Client's integrated runtime (IRT)
-    # library, which is built as NaCl untrusted code.
-    "pattern": ".",
-    "action": ["python", "src/build/download_nacl_irt.py",
-               "--nacl_revision", Var("nacl_revision"),
-               "--file_hash", "x86_32", Var("nacl_irt_hash_x86_32"),
-               "--file_hash", "x86_64", Var("nacl_irt_hash_x86_64")],
-  },
-  {
     # This downloads binaries for Native Client's newlib toolchain.
     # Done in lieu of building the toolchain from scratch as it can take
     # anywhere from 30 minutes to 4 hours depending on platform to build.