Add "primary account" support.

Two query params "PRIMARY_ACCOUNT_NAME" and
"PRIMARY_ACCOUNT_TYPE" allow users to supply
a primary account associated with the query, which
enables contacts provider to optimize query results.

For example, in an email composition screen, users may
want to promote email addresses related to an account
selected as a "from" field. This change allows the
client to let the contacts provider know the account.

Must be with I2a22be56822226e3ea6b6f2ef23bb77816d0345a

Bug: 3510087
Change-Id: Ibce363d336cb3e3a1fca10bddbd912ec96e4b059
3 files changed