Don't HANDLE_EINTR(close). Either IGNORE_EINTR(close) or just close.

It is incorrect to wrap close in HANDLE_EINTR on Linux. Correctness is
generally undefined on Mac, but as of r223369, it is incorrect in Chrome on
Mac.

To avoid new offenders, a PRESUBMIT check ensures that HANDLE_EINTR is not
used with close, and that IGNORE_EINTR is only used with close. Unnecessary
#includes of eintr_wrapper.h are also removed.

base/posix/einter_wrapper.h, PRESUBMIT.py, and ppapi/tests/test_broker.cc
contain non-mechanical changes. Variable naming within the latter is updated
per r178174. Missing #includes for <errno.h> in
content/zygote/zygote_main_linux.cc and tools/android/common/daemon.cc were
manually added. Mechanical changes were generated by running:

sed -E -i '' \
    -e 's/((=|if|return|CHECK|EXPECT|ASSERT).*)HANDLE(_EINTR\(.*close)/\1IGNORE\3/' \
    -e 's/(ignore_result|void ?)\(HANDLE_EINTR\((.*close\(.*)\)\)/\2/' \
    -e 's/(\(void\) ?)?HANDLE_EINTR\((.*close\(.*)\)/\2/' \
    $(git grep -El 'HANDLE_EINTR.*close')

sed -E -i '' -e '/#include.*eintr_wrapper\.h"/d' \
    $(grep -EL '(HANDLE|IGNORE)_EINTR' \
        $(git grep -El '#include.*eintr_wrapper\.h"'))

BUG=269623
R=agl@chromium.org, jln@chromium.org
TBR=OWNERS

Review URL: https://codereview.chromium.org/100253002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238390 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238390