Fix permission bug when importing vcard.

Possible source and source uris to import vcard to Contacts App:
Gmail App, uri starts with "content://content://gmail-ls/", permission
granted by Gmail App.
Downloads, uri starts with "content://con.google.provider.downloads.documents/document/",
or "content://downloads/", permission granted by Downloads.
Hangouts, uri starts with "content://com.google.android.apps.hangouts.content.EsProvider/",
permission granted by Hangouts

Gmail, Downloads, Hangouts uris need permissions granted from the source, so should read
to locall before requesting Contacts App required permissions.

Messenger, uri starts with "content://com.google.android.apps.messaging.shared.datamodel.MediaScratchFileProvider",
no permission needed.
Drive, uri starts with "file:///data/user/0/com.google.android.apps.docs/files/", no permission needed.

Messenger, Drive uris don't need permission, so both (read to local first, and requesting contacts
required permission first) are OK for them.

Contacts required permssion(READ_CONTACTS and READ_EXTERNAL_STORAGE) is used to grant uri like "file:///storage"
permission, so should be granted first for this kind of uris.

Totally, for uris "file:///storage" READ_EXTERNAL_STORAGE permission should be requested first.
For others uris should be read to local using granted permissions first.

BUG 26905556

Change-Id: I0dcf794ad71ed8eef6f08c617b84ccafd1cf1bed