Change setScissor() to take in Vulkan coordinate convention.

* Cache dimensions in GLSurface and GLFramebuffer so that we don't have
to query properties through gl.
* Change argument to const Rect&

Bug: 114439058
Change-Id: Ia5ba9405af92819152e26e13508e0b57bc73f233
Test: SurfaceFlinger_Test, go/wm-smoke
14 files changed