https://github.com/flutter/engine/compare/46e58b930d11...439a21816e61

git log 46e58b930d11..439a21816e61 --first-parent --oneline
2020-01-23 zhongwuzw@qq.com Fixes labelPrefix memory leak in FlutterEngine (flutter/engine#14674)
2020-01-23 matthew-carroll@users.noreply.github.com Release TextureView surface within FlutterTextureView when disconnected. (#48535) (flutter/engine#15899)
2020-01-23 iska.kaushik@gmail.com [fuchsia] Timeline events in profile mode to observatory (flutter/engine#15900)
2020-01-23 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from N502w... to Wc7e4... (flutter/engine#15935)
2020-01-23 tvolkert@users.noreply.github.com Add script to force build LUCI builders for a specified commit (flutter/engine#15938)
2020-01-23 skia-flutter-autoroll@skia.org Roll src/third_party/dart 6aa7407d6309..e84bea25df23 (6 commits) (flutter/engine#15934)
2020-01-23 skia-flutter-autoroll@skia.org Roll src/third_party/skia f9aea7f7e502..e4ddb8a7cddc (35 commits) (flutter/engine#15931)
2020-01-23 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from LGwl3... to LAOYs... (flutter/engine#15930)
2020-01-23 skia-flutter-autoroll@skia.org Roll src/third_party/dart 582727a4ec3b..6aa7407d6309 (4 commits) (flutter/engine#15923)
2020-01-23 gw280@google.com Revert "Migrate flutter_runner from flutter_runner::{Thread,Loop} to fml::{Thread,MessageLoop} (#15118)" (flutter/engine#15903)
2020-01-23 skia-flutter-autoroll@skia.org Roll src/third_party/dart a9ea9365ad8a..582727a4ec3b (33 commits) (flutter/engine#15906)
2020-01-22 brianosman@google.com Implement new SkCanvas virtuals in testing canvases (flutter/engine#15893)
2020-01-22 dnfield@google.com Const finder fixes (flutter/engine#15880)
2020-01-22 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from v-OJE... to N502w... (flutter/engine#15892)
2020-01-22 dnfield@google.com errant log (flutter/engine#15891)
2020-01-22 skia-flutter-autoroll@skia.org Roll src/third_party/skia d59053987a27..f9aea7f7e502 (10 commits) (flutter/engine#15890)
2020-01-22 jason-simmons@users.noreply.github.com [libtxt] Assign a unique ID to each glyph cluster within a line (flutter/engine#15742)
2020-01-22 skia-flutter-autoroll@skia.org Roll src/third_party/dart 439cabaec02f..a9ea9365ad8a (4 commits) (flutter/engine#15886)
2020-01-22 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from jAkm1... to LGwl3... (flutter/engine#15884)


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