NaCl: Update revision in DEPS, r6386 -> r6403

This pulls in the following Native Client changes:

r6387: (bradnelson) Fixing header name mismatch (matters to msvs2010 generator).
r6388: (kschimpf) Start the process of factoring out print routines into corresponding "verbose"
r6389: (sehr) Update to get ELF startup abi removal.
r6390: (mcgrathr) Crash with PC intact.
r6391: (mcgrathr) Revert unintended commit.
r6392: (mcgrathr) Fix linking libraries for nullptr test
r6393: (ncbray) Enable PyAuto on the Windows Chrome integration bot.
r6394: (mseaborn) Cleanup: Don't link sel_ldr against Cocoa on Mac
r6395: (pasko) Remove unsupported symbol 'signal' from newlib exports.
r6396: (pasko) Toolchain DEPS up(6395).
r6397: (polina) tests/toolchain: Factor out common macros into a shared header.
r6398: (krasin) service_runtime: remove unused NaClSyncQueue and nacl_sync_queue.c
r6399: (polina) tests/toolchain: Add a new test to verify that various standard types
r6400: (sanga) Some tests for PPBFileIO.
r6401: (bradnelson) Fix chromebinaries.py to cope with the possibility that the index may contain
r6402: (mseaborn) Add "irt_binaries" and "src/third_party/ppapi" to svn:ignore
r6403: (sanga) Disabling file io tests.  The tests seem to be flaky.

BUG=none
TEST=trybots


Review URL: http://codereview.chromium.org/7634009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96508 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -9,9 +9,9 @@ vars = {
   "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": "79e8a37476f4aaf32c13a2eebd5d5e0ec46108ae",
-  "nacl_irt_hash_x86_64": "d7c6116510f359d7dd675c5e92c3d25b3b976cd7",
-  "nacl_revision": "6386",
+  "nacl_irt_hash_x86_32": "9ec60fa5c1359afc5a23a1dbab27b3b6ca9064bf",
+  "nacl_irt_hash_x86_64": "e1155a7ff18e547676e851fec0b75172c61ad4cb",
+  "nacl_revision": "6403",
   # After changing nacl_revision, run 'glient sync' and check native_client/DEPS
   # to update other nacl_*_revision's.
   # TODO(brettw) We should use the "From" syntax to avoid hardcoding the