google-breakpad: Merge with upstream breakpad r1397

BUG=None
TEST=Tested the following on x86-alex (x86), peppy (amd64), daisy_spring (arm):
1. `FEATURES=test emerge-${BOARD} google-breakpad`
2. `USE='asan clang' FEATURES=test emerge-${BOARD} google-breakpad`
3. Run the following autotest tests:
   - logging_CrashSender
   - logging_UserCrash

Change-Id: Ibb56ad8b27218171ba6c0afeeb9f636eb3dfe8f4