Refine scrollHomePage & add getHomeScrollView for IYouTubeHelper

1.Refine the scrollHomePage()
2.Add getHomeScrollView() to get UiObject2, that can reduce the uncertain time to enhance the accuracy of the metrics collection when scrolling.

Bug: 164946826
Test: run pts/cuj/scroll/youtube
https://atp.googleplex.com/test_runs/102410707 (bonito)
https://atp.googleplex.com/test_runs/102411662 (bramble)

Change-Id: I9763aabfe12041cf49eba4ef9e0a320fcd43f6ad
1 file changed
tree: 2ddf7525b9c582861b35204ef065d1bbb95b2f87
  1. build/
  2. docs/
  3. emu_test/
  4. libraries/
  5. scripts/
  6. tests/
  7. utils/
  8. PREUPLOAD.cfg