NaCl: Update revision in DEPS, r8626 -> r8655

NaCl: Update revision in DEPS, r8626 -> r8655

This pulls in the following Native Client changes:

r8627: (jvoung) Add hook to whitelist glibc library files as 'web-accessible-resources',
r8628: (robertm) Added function to toolchain builder for shared newlib support.
r8629: (dschuff) Stage pnacl extension into chromebinaries directory, and add the nacl_irt_test environment to the scons mode.
r8630: (khim) Bump REVISIONS
r8631: (dschuff) Run Pnacl browser tests on nacl-chrome integration bot
r8632: (jvoung) Add a test to check that our nexe ARM float abi is hard, not soft.
r8633: (jvoung) Advertise debug options in pnacl-clang script's help message.
r8634: (bradnelson) Adding support for 'sources' 'sources!' and 'sources/'
r8635: (kschimpf) Clean up model.h in validator_arm to follow C++ style guide.
r8636: (mcgrathr) Further harmonize Gyp configuration for ARM with Chromium
r8637: (kschimpf) Allow bfc as another way to mask loads/stores.
r8638: (mseaborn) Cleanup: Remove unused arguments from nc_thread_starter()
r8639: (bbudge) Update Chrome revision in NaCl DEPS.
r8641: (kschimpf) Define baseline decoders for store/load (register) instructions.
r8642: (robertm) Corrected some paths inside the shared newlib experiment
r8643: (bungeman) Add dep of reverse_service to simple_serivce.
r8644: (mseaborn) Cleanup: Remove libpthread's unused __thread_exit_hook
r8645: (robertm) Roll PNaCl toolchain deps to r8628 
r8647: (dschuff) Disable pnacl browser tests on windows integration bot
r8648: (bradnelson) Switching scan_sources to be used as a module for speed + line length.
r8649: (mseaborn) Fix pthread_kill() to return an error number instead of setting errno
r8650: (mseaborn) libpthread: Make pthread_t a pointer instead of a small integer ID
r8651: (mcgrathr) Fix mcgrathr account name in OWNERS file
r8652: (mcgrathr) Fix objdump command name in validation-report.py
r8653: (jvoung) Remove redundant and local/custom LLC flag -arm_static_tls from driver,
r8654: (mseaborn) ARM: Remove another malloc()-avoidance hack now that the bottom 1GB is reserved
r8655: (bsy) Test to verify that NaClMutex objects are actually binary mutexes.

BUG=none
TEST=nacl_integration

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=138045

[Mark Seaborn, 2012-05-19 21:40:39]

I'll commit this TBR.

[bbudge, 2012-05-19 21:53:04]

lgtm