Add ThreadLogMessages and its test

Add ThreadLogMessages and its test.

This updates mini_chromium to 91ea4908ffd74d9c886bd2f8ccbfae6d31c499af.
The last five commits listed here are required to support this change.
The mini_chromium update includes:

c1745a924c5c Fix paths to atomicops files in base.gyp from 2f02dcc73536
108e9247189c Add #include of <unistd.h> to close_nocancel.cc
6e4f98a9edf8 Add logging::SetLogMessageHandler()
4063fcb8f460 Add base::ThreadLocalStorage
4870f18a33a6 Add base::LazyInstance
0d31b1f3a289 Fix base/memory/aligned_memory.h for MSVC
91ea4908ffd7 base/logging.h: DCHECK() should always reference its
             condition

BUG=crashpad:26
TEST=crashpad_util_test ThreadLogMessages.*
R=rsesek@chromium.org

Committed: https://chromium.googlesource.com/crashpad/crashpad/+/e95224bbe7db2a08595a1bdf1c94ca51fbeb23a6

[Mark Mentovai, 2015-03-27 21:34:23]

mark@chromium.org changed reviewers:
+ rsesek@chromium.org

[Mark Mentovai, 2015-03-27 21:35:01]

This depends on https://codereview.chromium.org/1039143004/ and
https://codereview.chromium.org/1039823002/.

[Robert Sesek, 2015-03-30 15:34:38]

LGTM

https://codereview.chromium.org/1041643003/diff/40001/util/thread/thread_log_...
File util/thread/thread_log_messages.cc (right):

https://codereview.chromium.org/1041643003/diff/40001/util/thread/thread_log_...
util/thread/thread_log_messages.cc:60: const char* file_poath,
nit: file_path

[Mark Mentovai, 2015-03-30 18:51:40]

Committed patchset #7 (id:120001) manually as
e95224bbe7db2a08595a1bdf1c94ca51fbeb23a6 (presubmit successful).