NaCl: Update revision in DEPS, r6258 -> r6275

NaCl: Update revision in DEPS, r6258 -> r6275

This pulls in the following Native Client changes:

r6259: (pdox) Update LLVM_GCC_MQ_REV to activate:
r6260: (pdox) Clobber libgcc_eh.a in the build directory, to force it to be rebuilt.
r6261: (nfullagar) Reduce time pyauto takes to run by reducing some counts.
r6262: (jvoung) Don't update the MQ repos twice (already updated once in the setup-hg-mq)
r6263: (polina) PPAPI proxy: do not check for NULL interfaces and NULL interface methods in
r6264: (pdox) Move libgcc_eh back to native code (part 2)
r6265: (pdox) Don't verify SDK archives in glibc mode, since there are none anymore.
r6266: (mseaborn) x86-32 sandbox: Set %esp/%ss simultaneously in syscall entry path
r6269: (halyavin) Fix resource leak in service runtime.
r6270: (mseaborn) Add test using NaCl with a minimal set of syscalls
r6271: (jvoung) Pnacl driver-side change to plumb through -mtls-use-call.
r6272: (robertm) Second attempt for initial test of url_loader api families.
r6273: (polina) Add CRASH macro to ppapi_test_lib and use in crash tests.
r6274: (mcgrathr) Update binutils to commit 38c9b31
r6275: (ncbray) Minimal Mac release builder fix.

BUG=none
TEST=trybots


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=95035

[Mark Seaborn, 2011-08-01 23:25:53]

Today's DEPS update.

[bradn, 2011-08-01 23:30:55]

LGTM

[commit-bot: I haz the power, 2011-08-02 02:24:16]

Change committed as 95035