google-breakpad: uprev breakpad to r905
The Chromium OS changes to google-breakpad have been upstreamed (r905).
This CL pulls and merges from the upstream branch.
BUG=chromium-os:22042
TEST=Verified the following:
1. emerge google-breadpad for x86-generic, arm-generic and amd64-generic
2. cros_run_unit_tests google-breakpad for x86-generic and amd64-generic
3. Run the following autotest tests on a Cr48:
- logging_CrashSender
- logging_UserCrash
Change-Id: I865193573ca3ac78f1d85abfd848686a3e3510e3
