Merge "bug#460672 framebuffer surface can\'t keep triple buffer if define NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3" am: b2e3095a60 am: 46f8beb07f
am: 6f9ba3b324

* commit '6f9ba3b32492c23b3197b01c330c571714c4a3dd':
  bug#460672 framebuffer surface can't keep triple buffer if define NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3