NaCl: Update revision in DEPS, r13679 -> r13687

This pulls in the following Native Client changes:

r13680: (bradnelson) Add back in android_tools, but in the right location.
r13682: (dyen) Added irt extension support for supplying the nacl_irt_memory interface.
r13683: (bradnelson) Disabling flaky test under asan.
r13684: (hans) service_runtime_x86_64.gyp: pass /nologo to ml64.exe
r13685: (mseaborn) Use uint32_t for untrusted pointer args: mmap() and munmap() syscalls
r13686: (jfb) LLVM 3.5 merge: add missing dependencies to PNaCl build
r13687: (dschuff) Build x86-32 IRT with PNaCl

R=mseaborn@chromium.org,bradnelson@chromium.org
BUG= https://code.google.com/p/nativeclient/issues/detail?id=3910
TEST=browser_tests and nacl_integration

Review URL: https://codereview.chromium.org/537003002

Cr-Commit-Position: refs/heads/master@{#293301}

DEPS

@@ -166,7 +166,7 @@ deps = {
     Var('chromium_git') + '/external/v8.git' + '@' +  Var('v8_revision'),
 
   'src/native_client':
-   Var('chromium_git') + '/native_client/src/native_client.git' + '@' + '61776de8bd9664c2186b08a36dacafddaa47896c',
+   Var('chromium_git') + '/native_client/src/native_client.git' + '@' + '32f8c257d2868f43c40bf464cd739bd79d12def7',
 
   'src/chrome/test/data/extensions/api_test/permissions/nacl_enabled/bin':
    Var('chromium_git') + '/native_client/src/native_client/tests/prebuilt.git' + '@' + '3e17365176c94624f46cace174f61834b7f3c35d',