Adds functions for skipping child component layout measuring.
Removes unnecessary code from VScrollTable.
1. case: no components
- render time without the fix: ~105ms
- render time with fix: ~105ms
2. case: 2 button and 2 textfield cols
- render time without the fix: ~279ms
- render time with fix: ~240ms (~17% faster)
3. case: 3 button and 3 textfield cols
- render time without the fix: ~350ms
- render time with fix: ~281ms (~20% faster)
Change-Id: I6025f8ee2fd438d228ff3b65f43535961cf12c0b