Enabling view capture analysis in Launcher tests.

For now, only Alpha Jumps detector is implemented. The test will fail if
an alpha jump is detected.

The ignore-list for alpha jump detection ended up being uncomfortably
long, I plan dealing with this immediately after landing this CL.

Bug: 286251603
Test: presubmit, forrest
Flag: N/A
Change-Id: I3f44b02015e2ce93eb8b4071becbc44b36416459