Make the Windows multi_dll build work in GN

Make the Windows multi_dll build work in GN

This patch still keeps the flag disabled, I will toggle that in a separate patch to reduce risk.

CQ_EXTRA_TRYBOTS=tryserver.chromium.linux:android_chromium_gn_compile_dbg,android_chromium_gn_compile_rel;tryserver.chromium.win:win8_chromium_gn_rel,win8_chromium_gn_dbg;tryserver.chromium.mac:mac_chromium_gn_rel,mac_chromium_gn_dbg

Committed: https://crrev.com/22488ada37ee94a2e774bbbeb10b0f8f8ea19275
Cr-Commit-Position: refs/heads/master@{#328031}

[brettw, 2015-05-01 22:38:46]

brettw@chromium.org changed reviewers:
+ scottmg@chromium.org

[brettw, 2015-05-01 22:38:47]

https://codereview.chromium.org/1122613002/diff/20001/chrome/browser/extensio...
File chrome/browser/extensions/BUILD.gn (left):

https://codereview.chromium.org/1122613002/diff/20001/chrome/browser/extensio...
chrome/browser/extensions/BUILD.gn:18: static_library("extensions") {
This change isn't strictly required.

[brettw, 2015-05-01 22:40:05]

The CQ bit was checked by brettw@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-05-01 22:41:21]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1122613002/20001

[brettw, 2015-05-01 22:42:17]

The CQ bit was unchecked by brettw@chromium.org

[brettw, 2015-05-01 22:42:33]

The CQ bit was checked by brettw@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-05-01 22:43:15]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1122613002/20001

[scottmg, 2015-05-01 22:47:22]

lgtm

[commit-bot: I haz the power, 2015-05-01 23:08:04]

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

[commit-bot: I haz the power, 2015-05-01 23:08:04]

Dry run: Try jobs failed on following builders:
  linux_chromium_gn_chromeos_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[brettw, 2015-05-01 23:38:28]

The CQ bit was checked by brettw@chromium.org

[brettw, 2015-05-01 23:38:29]

The patchset sent to the CQ was uploaded after l-g-t-m from scottmg@chromium.org
Link to the patchset: https://codereview.chromium.org/1122613002/#ps40001
(title: "chromeos and android")

[commit-bot: I haz the power, 2015-05-01 23:39:19]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1122613002/40001

[commit-bot: I haz the power, 2015-05-02 00:43:14]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-05-02 00:44:09]

Patchset 3 (id:??) landed as
https://crrev.com/22488ada37ee94a2e774bbbeb10b0f8f8ea19275
Cr-Commit-Position: refs/heads/master@{#328031}