NaCl: Update revision in DEPS, r12284 -> r12306

This pulls in the following Native Client changes:

r12285: (jvoung) Update PNaCl in TOOL_REVISIONS 12267 -> 12274
r12286: (bradnelson) Test minidumps with breakpad tools.
r12288: (mcgrathr) Use -mmacosx-version-min=10.6 uniformly
r12290: (mcgrathr) Update chrome_rev in DEPS
r12292: (mcgrathr) Update tools_rev in DEPS
r12294: (mcgrathr) toolchain_build: Update gcc revision to 4.8.2 release
r12295: (sbc) common.gypi: Seperate mac_sdk from mac_deployment_target
r12296: (sbc) Add support for building armhf trusted chroot image.
r12297: (mcgrathr) toolchain_build: Update GMP, ISL, and CLooG libraries in GCC build
r12298: (mseaborn) PNaCl: Fix GCC torture test script (broken by r12286)
r12299: (dschuff) PNaCl: Update LLVM revision in pnacl/DEPS
r12300: (mseaborn) Cleanup: Remove code that's conditionalised on "PNaCl+glibc" in Scons tests
r12301: (mcgrathr) Disable nacl_clock_cputime_test for coverage builds
r12302: (bradnelson) Dropping use of STEP_SUCCESS.
r12303: (mseaborn) Cleanup: Remove more Scons code that's conditionalised on "PNaCl+glibc"
r12304: (stichnot) sel_ldr: Add a -q argument to suppress initial warning/diagnostic output.
r12306: (petarj) [MIPS] Disable multidomain test for MIPS

BUG=none
TEST=browser_tests and nacl_integration

Review URL: https://codereview.chromium.org/38793005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230740 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230742 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230740
SVN changes up to revision 230742