Make sure View classes in ash/app_list/views have specific class names

Currently, some View subclasses do not override
getClassName(), so their class names will be "View" instead of something more specific like "AppListFolderView".
This branch overrides getClassName() for all View subclasses in ash/app_list/views

Bug: 962561
Test: None

Change-Id: I423df07c7521797857b0804374bbe0fa581b68fe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1611306
Commit-Queue: MyungJae Lee <myungjaelee@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Reviewed-by: Alex Newcomer <newcomer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#660443}
31 files changed