Update the collapsing toolbar layout

- Updating the height of title area to fulfill the spec
- Increasing the trigger points of animation for fade mode based
  on the line count of title, so the overlapping problem is
  prevented from the title scrolling up the title area
- Removing getLineCountWithReflection method since
  CollapsingToolbarLayout has already been supporting this method

Fix: 188608451
Fix: 189068911
Test: visual verified
Change-Id: I8dac87458f13d79e1941a4f2b3e961ac4d6a2944