To facilitate better development, add prerelease driver choice to graphics
driver preferences dashboard. This patch also makes sure that when game driver
or developer driver is not shipped, the choice doesn't show up.
Minor: Add tests.
Bug: b/148626177
Test: make RunSettingsRoboTests ROBOTEST_FILTER=GraphicsDriver
Change-Id: Iad398cd663300086d3f4802ffab34531e11dfb17
In the original implementation we showed a footer when global switch is off,
however, this was broken due to some refactor. This patch fixes the issue where
we don't set the visibility of the footer when global switch is on/off.
Bug: b/148626177
Test: make RunSettingsRoboTests ROBOTEST_FILTER=GraphicsDriver
Change-Id: I0f0763ee1551199cc8611c650350a2adbdf402ed
To make graphics driver selection more generic, rename GameDriver
specific classes to GraphicsDriver.
Bug: b/148626177
Test: make RunSettingsRoboTests ROBOTEST_FILTER=GraphicsDriver
Change-Id: If2780b32e2826bda56de11734736260f916182d0
