Update Breakpad to r1270

Update Breakpad to r1270.

r1263: Run svn propdel svn:executable on source code files.
r1264: Fix warnings from the Windows build.
r1265: Switch scoped_ptr.h to a compatible google3 implementation.
r1266: Use a proper ignore_result() to fix a warn_unused_result warning.
r1267: Windows: Fix remaining level 4 warnings.
r1268: Fix build with Mac OS X 10.9 SDK.
r1269: Fix #include order from r1268.
r1270: Don't do work inside assert(). Ever.

BUG=331268
R=thestig@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=244238

[Mark Mentovai, 2014-01-10 20:00:53]

TBR (DEPS)

[Lei Zhang, 2014-01-10 20:01:43]

lgtm

[Mark Mentovai, 2014-01-10 21:10:11]

Committed patchset #1 manually as r244238 (presubmit successful).