1URL: http://www.libpng.org/pub/png/libpng.html 2Version: 1.6.16 3License: libpng license 4License File: LICENSE, pulled out of png.h 5Description: png compression/decompression library 6Local Modifications: (1) Created pnglibconf.h from pnglibconf.h.prebuilt (a 7 rename with a few additional settings enabled). (2) Copied LICENSE into 8 this directory. (Originally it was pulled from png.h, but libpng has 9 now provided a separate LICENSE file for convenience, which we use 10 directly.) 11 12FAQ: 13Q: Why does this directory exist? 14A: libpng is pulled in through DEPS, but in order to build it using ninja, we 15 need to create pnglibconf.h. We originally tried creating 16 the file as an action in https://codereview.chromium.org/930283002/, but this 17 apparently led to a race condition on Windows, where some builds failed to 18 create the file in time for other files to include it. By checking these 19 files directly into Skia, we eliminate the race condition. 20