* Pipe the augmented autofill's inline actions through to the
InlineSuggestionsResponse
* Do not send the inline action if the number of inline suggestions is
zero
* Refactor autofill inline suggstion session so that all the calls to
the IME has happens within the class
* Send an empty response to IME to hide the inline suggestion UI when
view exits and the previous response wasn't empty
Test: manual verification, atest InlineLoginActivityTest
Bug: 149522488
Bug: 150312201
Change-Id: I7a0dbf44e9fad6e7da857448c0f2b186e1681d17
ec496000ec