https://android.googlesource.com/platform/external/skia/+/android-8.0.0_r4/samplecode/SampleXfer.cpp
samplecode/SampleXfer.cpp - platform/external/skia - Git at Google
samplecodecppplatformexternalskia
https://skia.googlesource.com/skia/+/a99593bfa91a8f7c07c79bf2337594114a07f828/samplecode/SampleWritePixels.cpp
samplecode/SampleWritePixels.cpp - skia - Git at Google
samplecodecppskiagitgoogle