Add enable_wifi_bootstrapping variable to common.gypi

Add enable_wifi_bootstrapping variable to common.gypi

This should simplify ifdefs and ensure flexibility as we move to new platforms.

BUG=370071
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=272433

[Vitaly Buka (NO REVIEWS), 2014-05-21 17:47:24]

lgtm

[Noam Samuel, 2014-05-21 17:49:16]

The CQ bit was checked by noamsml@chromium.org

[commit-bot: I haz the power, 2014-05-21 19:58:47]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/noamsml@chromium.org/294173002/1

[commit-bot: I haz the power, 2014-05-22 05:10:18]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_chromium_gn_compile_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_chromium_gn_c...)
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  chromium_presubmit on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/chromium_presubmit/bu...)
  linux_chromium_chromeos_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)
  linux_chromium_clang_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_clang_...)
  linux_chromium_gn_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_gn_rel...)
  linux_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_rel/bu...)

[commit-bot: I haz the power, 2014-05-22 05:14:06]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-05-22 05:14:06]

Try jobs failed on following builders:
  linux_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_rel/bu...)

[Vitaly Buka (NO REVIEWS), 2014-05-22 05:51:56]

The CQ bit was checked by vitalybuka@chromium.org

[commit-bot: I haz the power, 2014-05-22 05:52:57]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/noamsml@chromium.org/294173002/1

[commit-bot: I haz the power, 2014-05-22 06:01:45]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_chromium_gn_compile_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_chromium_gn_c...)
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  chromium_presubmit on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/chromium_presubmit/bu...)
  linux_chromium_chromeos_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)
  linux_chromium_clang_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_clang_...)
  linux_chromium_gn_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_gn_rel...)
  linux_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_rel/bu...)

[commit-bot: I haz the power, 2014-05-22 06:08:31]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-05-22 06:08:31]

Try jobs failed on following builders:
  android_chromium_gn_compile_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_chromium_gn_c...)
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  chromium_presubmit on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/chromium_presubmit/bu...)
  linux_chromium_chromeos_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)
  linux_chromium_clang_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_clang_...)
  linux_chromium_gn_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_gn_rel...)
  linux_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_rel/bu...)

[Noam Samuel, 2014-05-22 17:40:41]

The CQ bit was checked by noamsml@chromium.org

[commit-bot: I haz the power, 2014-05-22 17:43:18]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/noamsml@chromium.org/294173002/20001

[commit-bot: I haz the power, 2014-05-22 22:52:19]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  mac_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/mac_chromium_rel/buil...)

[Noam Samuel, 2014-05-22 22:54:12]

The CQ bit was unchecked by noamsml@chromium.org

[Noam Samuel, 2014-05-22 22:54:12]

The CQ bit was checked by noamsml@chromium.org

[commit-bot: I haz the power, 2014-05-22 22:54:57]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/noamsml@chromium.org/294173002/20001

[commit-bot: I haz the power, 2014-05-23 07:45:42]

Change committed as 272433