Split stacks and move tasks between them. Layout the windows
according to the new stack split.
After layout content rectangles are known split the available area
between all stack boxes. Then use those values for future layout.
Provide stack contents to ActivityManager.
Change-Id: I9746e6185445633810d506be514d0b7b540a7f99
SurfaceControl is the window manager side; it can
control the attributes of a surface but cannot push buffers
to it. Surface on the other hand is the application (producer)
side and is used to push buffers to the surface.
Change-Id: Ib6754c968924e87e8dd02a2073c7a447f729f4dd
The DimLayer behind popups was not changing when the popup layer
changed. It will now.
Fixes bug 7974415.
Change-Id: Ia486efa83d623716a09d73a22493a4222823c573
Replace two classes that did similar things in a complicated manner
with one class that does it more simply.
Bug 7064755 fixed.
Change-Id: I8c415671f60d1d2ece9da5916421f4d24aed2d65
