https://github.com/flutter/engine/compare/aa50eae0f794...c15efb9231a4

git log aa50eae0f794..c15efb9231a4 --first-parent --oneline
2020-01-21 skia-flutter-autoroll@skia.org Roll src/third_party/dart 7070347bbb7a..f910a7575f3c (2 commits) (flutter/engine#15849)
2020-01-21 skia-flutter-autoroll@skia.org Roll src/third_party/skia 9f22f1ff3190..e07936314c2b (3 commits) (flutter/engine#15848)
2020-01-21 skia-flutter-autoroll@skia.org Roll src/third_party/skia ef05567733eb..9f22f1ff3190 (1 commits) (flutter/engine#15847)
2020-01-21 skia-flutter-autoroll@skia.org Roll src/third_party/dart c790eccdf4c4..7070347bbb7a (4 commits) (flutter/engine#15846)
2020-01-20 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from omzFN... to 0ERtT... (flutter/engine#15845)
2020-01-20 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from rTJJV... to yMvVd... (flutter/engine#15844)
2020-01-20 skia-flutter-autoroll@skia.org Roll src/third_party/dart e8c1391b26f7..c790eccdf4c4 (5 commits) (flutter/engine#15843)
2020-01-20 skia-flutter-autoroll@skia.org Roll src/third_party/dart e7b1392b0205..e8c1391b26f7 (1 commits) (flutter/engine#15842)
2020-01-20 skia-flutter-autoroll@skia.org Roll src/third_party/skia 3322aafc36d4..ef05567733eb (1 commits) (flutter/engine#15841)
2020-01-20 skia-flutter-autoroll@skia.org Roll src/third_party/dart 407cd2bf3b88..e7b1392b0205 (2 commits) (flutter/engine#15840)
2020-01-20 skia-flutter-autoroll@skia.org Roll src/third_party/skia e79897c42389..3322aafc36d4 (2 commits) (flutter/engine#15839)
2020-01-20 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from 4od_3... to omzFN... (flutter/engine#15838)
2020-01-20 skia-flutter-autoroll@skia.org Roll src/third_party/dart 93ebbe2c7a8e..407cd2bf3b88 (1 commits) (flutter/engine#15837)
2020-01-20 skia-flutter-autoroll@skia.org Roll src/third_party/skia e8fc3ffdada3..e79897c42389 (1 commits) (flutter/engine#15836)
2020-01-20 skia-flutter-autoroll@skia.org Roll src/third_party/dart 29c166f07d3b..93ebbe2c7a8e (3 commits) (flutter/engine#15835)
2020-01-19 skia-flutter-autoroll@skia.org Roll src/third_party/skia f0b7edf6cd94..e8fc3ffdada3 (1 commits) (flutter/engine#15800)
2020-01-19 xster@google.com Reduce default verbosity of Android embedding (flutter/engine#15164)
2020-01-18 skia-flutter-autoroll@skia.org Roll src/third_party/dart f34a25099be6..29c166f07d3b (6 commits) (flutter/engine#15755)
2020-01-18 skia-flutter-autoroll@skia.org Roll src/third_party/skia 5344cc31ff59..f0b7edf6cd94 (1 commits) (flutter/engine#15754)
2020-01-18 skia-flutter-autoroll@skia.org Roll src/third_party/dart 65b8b6805dac..f34a25099be6 (1 commits) (flutter/engine#15753)
2020-01-18 skia-flutter-autoroll@skia.org Roll src/third_party/skia ee3216d8f835..5344cc31ff59 (1 commits) (flutter/engine#15752)
2020-01-18 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from MCe3R... to 4od_3... (flutter/engine#15751)
2020-01-18 skia-flutter-autoroll@skia.org Roll src/third_party/skia 507736fc3abf..ee3216d8f835 (2 commits) (flutter/engine#15750)
2020-01-18 ferhat@gmail.com Fix path.contains failure when devicepixelratio != 1.0 (flutter/engine#15743)
2020-01-18 skia-flutter-autoroll@skia.org Roll src/third_party/dart 020585872a25..65b8b6805dac (8 commits) (flutter/engine#15749)
2020-01-18 skia-flutter-autoroll@skia.org Roll src/third_party/skia bd5ee543633f..507736fc3abf (3 commits) (flutter/engine#15747)
2020-01-18 ferhat@gmail.com Fix Color API, move toCss to helper functions (flutter/engine#15740)
2020-01-17 skia-flutter-autoroll@skia.org Roll src/third_party/dart f96c48307d14..020585872a25 (16 commits) (flutter/engine#15744)


If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC aaclarke@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md