Gallery2: Fix fail to share in MovieActivity after use camera

When using camera, it will call PhotoPage which creates its
share option menu and clear the shared provider's intent which
causes the problem. The option menu uses ShareActionProvider
to handle operation, and it saves the share intent in
ActivityChooserModel. The PhotoPage onCreateActionBar
method will create the menu which sets the share intent to null.
So when click the share button, there is no responding.

Recreate the provider's intent when resume to MovieActivity.

CRs-Fixed: 513809

Change-Id: I1f4ff891b3909009b716d243147de886ae98dd9e