Add a GN flag for the Windows multi-dll build.

Add a GN flag for the Windows multi-dll build.

The first pass of moving the other Chrome-specific build flags out of the root build config file and into the new one. This requires both ffmpeg and Blink changes to finish landing.

R=scottmg@chromium.org
TBR=ddorwin@chromium.org (widevine)

Committed: https://crrev.com/edff53a35780ba2f515c7e8d4f7131c91151e1a3
Cr-Commit-Position: refs/heads/master@{#327854}

[brettw, 2015-04-30 21:00:30]

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

[commit-bot: I haz the power, 2015-04-30 21:01:01]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1120803003/1

[scottmg, 2015-04-30 21:06:50]

lgtm

[brettw, 2015-04-30 21:07:34]

The CQ bit was unchecked by brettw@chromium.org

[brettw, 2015-04-30 21:07:38]

The CQ bit was checked by brettw@chromium.org

[commit-bot: I haz the power, 2015-04-30 21:09:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1120803003/1

[commit-bot: I haz the power, 2015-04-30 21:25:15]

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

[commit-bot: I haz the power, 2015-04-30 21:25:17]

Try jobs failed on following builders:
  ios_dbg_simulator_ninja on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)

[brettw, 2015-04-30 21:41:44]

The CQ bit was checked by brettw@chromium.org

[brettw, 2015-04-30 21:41:45]

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/1120803003/#ps20001
(title: "merge")

[commit-bot: I haz the power, 2015-04-30 21:43:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1120803003/20001

[brettw, 2015-04-30 21:48:06]

TBR ddorwin@chromium.org for widevine build change

[commit-bot: I haz the power, 2015-04-30 22:56:10]

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

[commit-bot: I haz the power, 2015-04-30 22:56:13]

Failed to apply patch for chrome/installer/util/BUILD.gn:
While running git apply --index -3 -p1;
  error: patch failed: chrome/installer/util/BUILD.gn:2
  Falling back to three-way merge...
  Applied patch to 'chrome/installer/util/BUILD.gn' with conflicts.
  U chrome/installer/util/BUILD.gn

Patch:       chrome/installer/util/BUILD.gn
Index: chrome/installer/util/BUILD.gn
diff --git a/chrome/installer/util/BUILD.gn b/chrome/installer/util/BUILD.gn
index
4351912370c37937efd394a94ab4637ef4d1ca35..3fc89e1bce4d0ff7ca1fa0572a306d61c879a11a
100644
--- a/chrome/installer/util/BUILD.gn
+++ b/chrome/installer/util/BUILD.gn
@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/chrome_build.gni")
 import("//testing/test.gni")
 
 static_library("util") {

[brettw, 2015-04-30 23:37:24]

The CQ bit was checked by brettw@chromium.org

[brettw, 2015-04-30 23:37:24]

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/1120803003/#ps40001
(title: "remerge")

[commit-bot: I haz the power, 2015-04-30 23:38:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1120803003/40001

[commit-bot: I haz the power, 2015-05-01 01:10:00]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-05-01 01:10:50]

Patchset 3 (id:??) landed as
https://crrev.com/edff53a35780ba2f515c7e8d4f7131c91151e1a3
Cr-Commit-Position: refs/heads/master@{#327854}

[rickyz (no longer on Chrome), 2015-05-01 01:43:39]

A revert of this CL (patchset #3 id:40001) has been created in
https://codereview.chromium.org/1117063004/ by rickyz@chromium.org.

The reason for reverting is: May have caused some link errors on windows:
https://build.chromium.org/p/chromium.win/builders/Win%20x64%20GN/builds/814.