AutofillPreferences: Modify UI only when it's available.

AutofillPreferences: Modify UI only when it's available.

If an autofill profile changes when AutofillPreferences fragment is
alive, but its view has been destroyed, then AutofillPreferences crashes
as it tries to update the destroyed view. The fix is to start observing
profile changes in onActivityCreated and stop in onDestroyView.

http://developer.android.com/reference/android/app/Fragment.html#Lifecycle

BUG=539962
Committed: https://crrev.com/7a320d9e42ea2648c07fd7770b157332f15af324
Cr-Commit-Position: refs/heads/master@{#353942}

[please use gerrit instead, 2015-10-13 22:01:47]

rouslan@chromium.org changed reviewers:
+ aurimas@chromium.org, mariakhomenko@chromium.org

[please use gerrit instead, 2015-10-13 22:01:47]

Aurimas, PTAL as the person probably most familiar with this code.

Maria, OWNERS PTAL.

[aurimas (slooooooooow), 2015-10-13 22:05:38]

lgtm

[Maria, 2015-10-14 01:33:58]

lgtm

[please use gerrit instead, 2015-10-14 01:34:24]

The CQ bit was checked by rouslan@chromium.org

[commit-bot: I haz the power, 2015-10-14 01:35:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1394003005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1394003005/1

[commit-bot: I haz the power, 2015-10-14 02:15:24]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-14 02:16:40]

Patchset 1 (id:??) landed as
https://crrev.com/7a320d9e42ea2648c07fd7770b157332f15af324
Cr-Commit-Position: refs/heads/master@{#353942}