NaCl: Update revision in DEPS, r13506 -> r13538

This pulls in the following Native Client changes:

r13507: (noelallen) Reapply patch which was reverted due to conflict.
r13508: (dschuff) PNaCl Driver: do not generate temp file names beyond Windows' MAX_PATH limit
r13509: (jvoung) Add a flag to pnacl-finalize that allows users to keep function names.
r13510: (dschuff) Disable flaky sandboxed translator tests on mac
r13511: (dschuff) Update revision for PNaCl r13466->r13509
r13512: (ncbray) Fix untrusted.gypi and build_nexe.py
r13513: (noelallen) Cleanup bionic build script.
r13514: (dyen) Added initial pass of nacl_irt_code_data_alloc.
r13515: (sbc) Use custom exception class for errors in package_version.
r13516: (hidehiko) Non-SFI mode: SCONS_NONSFI_TC clean up.
r13517: (hidehiko) Non-SFI Mode: Refactoring. Provide non-SFI version of nacl_irt_query_core.
r13518: (binji) Revert "Non-SFI mode: SCONS_NONSFI_TC clean up."
r13519: (bradnelson) Make the trybots fail early if 'git cl try' is mistakenly used.
r13520: (bradnelson) Make build_nexe.py rebuild when script itself has changed.
r13521: (noelallen) Updates GN dep, and cleans up some toolchain prep definitions to make it easier to debug what's going on.
r13523: (teravest) Add embedder interface for fatal log messages.
r13524: (bradnelson) Passing --config-name to build_nexe.py for all arches.
r13525: (teravest) Create a sel_ldr_launcher_base target.
r13526: (teravest) Revert "Add embedder interface for fatal log messages."
r13527: (hidehiko) Non-SFI mode: Get rid of socketcall on ARM.
r13528: (teravest) Add embedder interface for fatal log messages.
r13529: (sbc) Drop .ARM.exidx segment in nacl_helper_bootstrap linker script.
r13530: (binji) Disable tests that fail on mac10.7-newlib-dbg-asan bot.
r13531: (binji) Another try at disabling mac-asan tests from r13530.
r13532: (sbc) Allow cross compiled trusted components to be disabled in core_nacl_sdk.gyp.
r13533: (jvoung) Revert "Update revision for PNaCl r13466->r13509"
r13534: (binji) Disable more tests that fail on mac10.7-newlib-dbg-asan.
r13535: (binji) Fix typo introduced in r13534.
r13536: (sbc) Add cast operators to call to __builtin___clear_cache.

BUG=none
TEST=browser_tests and nacl_integration
TBR=bradnelson@google.com

Review URL: https://codereview.chromium.org/420083002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285865 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -35,7 +35,7 @@ vars = {
   "skia_git": "https://skia.googlesource.com",
   "boringssl_git": "https://boringssl.googlesource.com",
   "swig_revision": "230490",
-  "nacl_revision": "13506",
+  "nacl_revision": "13538",
   # After changing nacl_revision, run 'glient sync' and check native_client/DEPS
   # to update other nacl_*_revision's.
   "nacl_tools_revision": "13077",  # native_client/DEPS: tools_rev