NaCl: Update revision in DEPS, r12657 -> r12687

This pulls in the following Native Client changes:

r12658: (dschuff) toolchain_build_pnacl: build bitcode target libs
r12659: (mcgrathr) Clean up trybot selection
r12660: (dschuff) toolchain_build_pnacl: Build native target libraries
r12661: (bradnelson) Explicitly excluding some glibc tests.
r12662: (dschuff) Windows: Pick a temp directory on the same drive as the working dir
r12663: (bradnelson) Pulling in newer glibc to connect irt dev interfaces for fdio and filename.
r12664: (dschuff) toolchain_build_pnacl: default to only 32 bit host libs and run regression tests
r12665: (dschuff) Don't run LLVM regression tests without llvm-test.py script.
r12666: (mcgrathr) Fix typos in PRESUBMIT.py change
r12667: (noelallen) Adds the bionic builder to the buildbot selector.
r12668: (noelallen) Builder is trying to access non-existant build_toolchain_build_bionic.py
r12669: (bradnelson) Pulling in newer glibc to connect irt dev interfaces for fdio and filename.
r12670: (dschuff) Move dummy IRT shim build into libs_support_native target
r12671: (mcgrathr) toolchain_build: Generate patches from git repositories
r12672: (dschuff) toolchain_build_pnacl: build bitcode libs with biased bitcode
r12673: (dschuff) toolchain_build: add option to build targets into a subdirectory of the output dir.
r12674: (jfb) PNaCl tool revisions updater: retry git-svn when it rebuilds its revision map.
r12675: (mcgrathr) toolchain_build: Build GDB
r12676: (noelallen) Fix clean build with test for experimental bionic.
r12677: (etienneb) Fix invalid allocated memory pointer.
r12678: (jvoung) Also generate a REV file for toolchain_build's driver install command.
r12679: (mcgrathr) toolchain_build: Enable Windows cross-build
r12680: (noelallen) Disable tests and update hash for bionic.
r12681: (bradnelson) Create e:/TEMP etc if it doesn't exist already.
r12682: (dschuff) toolchain_build_pnacl: Add FEATURE_VERSION and README files
r12683: (noelallen) Only build gcc_lib.
r12684: (dschuff) Small fixes for toolchain_build_pnacl.py
r12685: (dschuff) Add toolchain_main option to install built packages to a specified directory.
r12686: (sbc) Update newlib version in tools/REVISIONS
r12687: (khim) Add capture_stderr parameter to command_tester.py

BUG=none
TEST=browser_tests and nacl_integration
R=ncbray@chromium.org

Review URL: https://codereview.chromium.org/152673005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248533 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248534 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 248534