NaCl: Update revision in DEPS, r12770 -> r12773
This pulls in the following Native Client changes:
r12771: (kschimpf) Add pnacl-compress to toolchain, and --compress to pnacl-finalize
r12772: (noelallen) Modify assembly identifiers to fix sel_ldr for ARM.
r12773: (jvoung) Update TOOL_REVISIONS for newlib x86 gcc to 12761 and PNaCl to 12772.
TBR=dyen@chromium.org
BUG= https://code.google.com/p/chromium/issues/detail?id=344101
TEST=nacl_integration
Review URL: https://codereview.chromium.org/
168593004
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251608 0039d316-1c4b-4281-b951-d872f2087c98