Revert "Allow translucent navigation bar in landscape mode."

This reverts commit 378403d5d2a9f8726f37cdf87591c736fac3bcc1.
Revert "Fix translucent navigation bar layout on tablets in landscape."

This reverts commit 7fc2be70c7e15847394c646e884d6cad5e45eb5a.
Revert "Only show status bar blocker view if nav bar is translucent."

This reverts commit a6c9ba194ea385e77bbd9a5fea69891489b5a259.
Revert "Fix glitch appearing when using translucent system bars in landscape."

This reverts commit 7ff2e3ddf851662a5c40b21f514ba9b2d9562350.
Implement Dynamic System Bars [1/2]

This commit implements DSB. Simple as that.

All the changes:
- frameworks/base (I3bc7102b2139fd1fa3de22aac096bd2a75bde878)
- packages/apps/Settings (Id2b105dfb3faf3cad74d0fa0dc33d01f6b71a853)

Change-Id: I3bc7102b2139fd1fa3de22aac096bd2a75bde878

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/statusbar/StatusBarIconView.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java