The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2d9977d86f8d6bb331ec472426fadb3e9f4c18e3

commit 2d9977d86f8d6bb331ec472426fadb3e9f4c18e3
Author: michaelbai <michaelbai@chromium.org>
Date: Tue Sep 20 18:44:15 2016

build full 64bit WebView

Enable to build full 64-bit WebView APK which has both 64-bit
and 32-bit binaries

BUG= 645264 

Review-Url: https://codereview.chromium.org/2331573003
Cr-Commit-Position: refs/heads/master@{#419827}

[modify] https://crrev.com/2d9977d86f8d6bb331ec472426fadb3e9f4c18e3/android_webview/BUILD.gn
[modify] https://crrev.com/2d9977d86f8d6bb331ec472426fadb3e9f4c18e3/android_webview/system_webview_apk_tmpl.gni
[modify] https://crrev.com/2d9977d86f8d6bb331ec472426fadb3e9f4c18e3/build/config/android/config.gni

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/clank/internal/apps/+/84f4f07a0a03ed82285fa9fc352a1230139cae73

commit 84f4f07a0a03ed82285fa9fc352a1230139cae73
Author: Tao Bai <michaelbai@google.com>
Date: Tue Sep 20 17:57:14 2016

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/clank/internal/apps/+/796de138f1a0dfb413ce3c3ac34f45f7dd3f32a7

commit 796de138f1a0dfb413ce3c3ac34f45f7dd3f32a7
Author: Tao Bai <michaelbai@google.com>
Date: Sat Sep 10 00:55:21 2016

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/clank/internal/apps/+/4d8da7fe77d85b004115de6d8e225318d05fab6a

commit 4d8da7fe77d85b004115de6d8e225318d05fab6a
Author: Tao Bai <michaelbai@google.com>
Date: Thu Sep 29 01:09:52 2016