Adjust KitKat easter egg to display "K" no matter what

The way is currently working, it pulls the first letter of the build_id for the easter egg. This is making it to where some devices show a "J" instead of a "K", the way it was meant to be.

Change-Id: I6e91bdc5695e2b2e8317a4ba20df33d6f744437f
Add xxhdpi versions of our improved tethering icons

Change-Id: If943f81389774a1f8ca0407cab4756687a273be7
Fix stencil buffer bug.

Stencil test is enabled by setStencilFromClip(), but not disabled
in some use case, which causes some of the pixels are discarded by
mistake in draws followed. Disable stencil test when there is no
dirty clip.

CRs-Fixed: 539456

Change-Id: I318fb47212e49e2da89bcbfd161a1689ef91b02f
Revert "Fix Immersive confirmation in expanded mode."

This reverts commit b0aaa5f58e46c0841a8de817c83c931ab6016b8c.
Frameworks: I'm such an idiot