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 I67bbf5fe8fd821da967a50b69e467caafc7fd388

Bug: 6188932
Change-Id: I49ccee1dcffe8d41401b42a637dd0da8dd11d90d