Repack 64-bit and 32-bit APKs into the same APK.

Repack 64-bit and 32-bit APKs into the same APK.

Repacking a 64-bit and a 32-bit WebView APK into the same APK enables
64-bit devices to run both 64-bit and 32-bit apps that use WebView.

BUG=447530
Committed: https://crrev.com/b3db576bea75aace7812107b13671cde98a3ff61
Cr-Commit-Position: refs/heads/master@{#321760}

[gsennton, 2015-03-20 11:16:13]

gsennton@chromium.org changed reviewers:
+ torne@chromium.org

[Torne, 2015-03-23 11:03:45]

lgtm

[gsennton, 2015-03-23 11:53:08]

The CQ bit was checked by gsennton@chromium.org

[commit-bot: I haz the power, 2015-03-23 11:53:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1027593004/20001

[commit-bot: I haz the power, 2015-03-23 12:19:35]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-23 12:20:10]

Patchset 2 (id:??) landed as
https://crrev.com/b3db576bea75aace7812107b13671cde98a3ff61
Cr-Commit-Position: refs/heads/master@{#321760}