Add a CTS Verifier test for EXTRA_CHOOSER_CONTENT_TYPE_HINT
The test can pass for two reasons:
1. The sharesheet doesn't show a headline for text shares.
2. The sharesheet does show a headline and it honors the subtype hint when
provided.
To simplify operation, this is broken up into multiple steps to ask the
operator if a headline exists first, then checking whether the album
subtype is honored.
Bug: 323380224
Test: Running the CTS test, exploring all paths.
Change-Id: Ic9e450dc31b66d15ff04aa810a5cf70675ed0395
5 files changed
