Documentation fix.
Documentation fix.

Activity's documentation wasn't clear on what would happen when
calling setContentView(View).

Change-Id: I37be6565ba897694460c80a39562346293faa8ea

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base