ResearchLogger log RichInputConnection

Move many ResearchLogger data collection points to RichInputConnection.
By collecting data here, developers do not have to remember to keep the
ResearchLog consistent with calls to the RichInputConnection.

In addition, some unnecessary log points were removed, and the ResearchLogger
is now independent of LatinImeLogger.

multi-project change with Ib71f841044ec1072610ab5638a5edfce29b7c05b

DO NOT MERGE

Bug: 6188932
Change-Id: I9ec7500a5b18bfe1a5a5bb1e5bf21c43351fc59e