NaCl: Update revision in DEPS, r13785 -> r13797

This pulls in the following Native Client changes:

r13786: (mseaborn) Scons: Add a sanity check to ensure that nonsfi_nacl=1 is used with bitcode=1
r13787: (shyamsundarr) fix verify_regular_instructions test.
r13788: (mseaborn) untrusted.gypi: Factor out duplicated "-t" option
r13789: (mseaborn) Cleanup: Remove src/trusted/gio/, since it is unused
r13790: (dyen) Added tests for pthread conditions using irt_ext.
r13791: (pkasting) Make native_client BUILD.gn more closely match the main Chromium one.
r13792: (mseaborn) Cleanup: Update comment about unnecessary copying during IRT loading
r13793: (mseaborn) Cleanup: Remove some unused code from src/shared/gio/
r13794: (mseaborn) Cleanup: Remove src/trusted/generic_container/, which is unused
r13795: (yyanagisawa) Won't try to use goma if GOMA_DISABLED=true.
r13796: (dyen) Added tests for semaphores using irt_ext.
r13797: (uekawa) NonSFI Mode:  Make hello_world test run with nonsfi_nacl=1 bitcode=1 pnacl_generate_pexe=0.

BUG=none
TEST=browser_tests and nacl_integration
CQ_EXTRA_TRYBOTS=tryserver.chromium.linux:linux_rel_precise32,linux_nacl_sdk,linux_chromium_dbg
TBR=dschuff@chromium.org

Review URL: https://codereview.chromium.org/605133005

Cr-Commit-Position: refs/heads/master@{#297014}

DEPS

@@ -87,7 +87,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling NaCl
   # and whatever else without interference from each other.
-  'nacl_revision': '15cf4505166a6c85f9f3c5c78c639e63705b88fa', # from svn revision r13785
+  'nacl_revision': 'c65c1ed84d500015273d5e72c6ddcebc2a23f9b8', # from svn revision r13797
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.