Instant Apps: Be extra safe with the flag check.

Instant Apps: Be extra safe with the flag check.

I just thought of the possibility that OEMs may have found other uses
for unused flag ids. This flag is only defined in O, so let's only check
for it in O to ensure we aren't capturing any weird OEM-customized edge
cases.

BUG=710497
Review-Url: https://codereview.chromium.org/2813993002
Cr-Commit-Position: refs/heads/master@{#463841}
(cherry picked from commit 8152d2adcabba8e58d47308f233f2619230fe711)

Review-Url: https://codereview.chromium.org/2808203004 .
Cr-Commit-Position: refs/branch-heads/3029@{#674}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed: https://chromium.googlesource.com/chromium/src/+/cb65deb6746cd262ff82bef478127e34d0110fd2

[Maria, 2017-04-12 00:34:04]

Description was changed from

==========
Instant Apps: Be extra safe with the flag check.

I just thought of the possibility that OEMs may have found other uses
for unused flag ids. This flag is only defined in O, so let's only check
for it in O to ensure we aren't capturing any weird OEM-customized edge
cases.

BUG=710497

Review-Url: https://codereview.chromium.org/2813993002
Cr-Commit-Position: refs/heads/master@{#463841}
(cherry picked from commit 8152d2adcabba8e58d47308f233f2619230fe711)
==========

to

==========
Instant Apps: Be extra safe with the flag check.

I just thought of the possibility that OEMs may have found other uses
for unused flag ids. This flag is only defined in O, so let's only check
for it in O to ensure we aren't capturing any weird OEM-customized edge
cases.

BUG=710497

Review-Url: https://codereview.chromium.org/2813993002
Cr-Commit-Position: refs/heads/master@{#463841}
(cherry picked from commit 8152d2adcabba8e58d47308f233f2619230fe711)

Review-Url: https://codereview.chromium.org/2808203004 .
Cr-Commit-Position: refs/branch-heads/3029@{#674}
Cr-Branched-From:
939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed:
https://chromium.googlesource.com/chromium/src/+/cb65deb6746cd262ff82bef47812...
==========

[Maria, 2017-04-12 00:34:05]

Committed patchset #1 (id:1) manually as
cb65deb6746cd262ff82bef478127e34d0110fd2.