Rename ActivityMonitor.onMatchIntent to onStartActivity.

Fixes: 37672383
Test: cts-tradefed run singleCommand cts-dev --module CtsAppTestCases -t \
      android.app.cts.Instrumentation_ActivityMonitorTest

Change-Id: Ic3fdba576232f0a05454dde8ea482ea714aeee3d
4 files changed