[Android]: Replace calls to getdtablesize with sysconf(_SC_OPEN_MAX) in tools.

[Android]: Replace calls to getdtablesize with sysconf(_SC_OPEN_MAX) in tools.

The getdtablesize functions has been deprecated by Posix and has been removed
from Android's LB64 ABI. Replace calls to it with the modern equivalent
sysconf(_SC_OPEN_MAX).

This fixes a build breakage in tryserver.blink/builders/android_blink_compile_rel/dbg.

BUG=354405
TBR=phajdan.jr@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=280533

[rmcilroy, 2014-06-28 11:47:03]

TBRing to fix the blink trybots.

[rmcilroy, 2014-06-28 11:47:43]

The CQ bit was checked by rmcilroy@chromium.org

[commit-bot: I haz the power, 2014-06-28 11:48:28]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/rmcilroy@chromium.org/349323003/1

[commit-bot: I haz the power, 2014-06-28 13:46:23]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  linux_chromium_gn_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_gn_rel...)
  win_chromium_x64_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_x64_rel/...)

[commit-bot: I haz the power, 2014-06-28 20:54:46]

Change committed as 280533

[navabi1, 2014-06-30 20:00:27]

lgtm

[Paweł Hajdan Jr., 2014-07-28 11:47:01]

LGTM