NaCl: Update revision in DEPS, r8264 -> r8275
NaCl: Update revision in DEPS, r8264 -> r8275

This pulls in the following Native Client changes:

r8266: (bsy) add interval sets.  add memory interval interlocks to prevent race.
r8267: (bsy) changed dprintf definition to NaCl_dprintf.
r8268: (bsy) coverage abort status vs normal abort status
r8269: (bsy) needed trusted_env instead of env.
r8270: (jvoung) Revert "add interval sets.  add memory interval interlocks to prevent race."
r8271: (bradnelson) Adding a startup regression test.
r8272: (bbudge) Update Chrome revision in NaCl DEPS.
r8274: (robertm) Update deps for gold as final pnacl linker
r8275: (mseaborn) Exception handling: Windows: Attach debug exception handler on demand

BUG=none
TEST=nacl_integration

Review URL: https://chromiumcodereview.appspot.com/10108006

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@132521 0039d316-1c4b-4281-b951-d872f2087c98

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