Changes

= How Android is using Gralloc =

SurfaceTexture is a client-server architecture. The SurfaceTextureClient implements EGLNativeWindow, into which the application renders. When the Android hardware UI is used, the SurfaceTextureClient is bound into a EGLSurface, and when the application wants to present the buffer, it calls eglSwapBuffers which calls to EGLNativeWindow::queue and EGLNativeWindow::dequeue.