Test: Open all apps and observe the position of tabs alignment.
Click a tab and observe the fade in color effect.
Fix: 191387242
Change-Id: Ie23a092268ce62eba29059eb5bd266a46ca652a5
Test: Open all apps to confirm tab style match the mock in both dark &
light mode.
Open widgets picker to confirm tab style match the mock in both
dark & light mode.
Bug: 191387242
Change-Id: Ie0111f65813128fef5befbdefd451cf0e9f01be9
Update the tab colors based on the discussion in the bug and the
design mock.
Rename the color/all_apps_tab_bg to
color/all_apps_tab_background_selected to make the usage of the color
explicit.
(Confirmed it's only used for the color of the selected tab)
Bug: 189488670
Test: Visual inspection
Change-Id: I6ac38f71a8dd8852e1ab2e70f2f8434e9101daa1
