Android NDK r19 Beta 1 (build 5106443)
Update prebuilt GCC to build 3335333. am: 0c0a709321 am: 4b321db489 am: d4ee592eb3
am: c3b7a17564

Change-Id: If24c71ce5730d4fe0e1015f4102d20bfa4f200d8