git@github.com:flutter/engine.git/compare/508146f0defb...7a621a7f7e4f

git log 508146f0defb..7a621a7f7e4f --no-merges --oneline
2019-10-18 skia-flutter-autoroll@skia.org Roll src/third_party/skia 20eafffd2d2f..b80d31f8cbe2 (4 commits) (flutter/engine#13226)
2019-10-18 skia-flutter-autoroll@skia.org Roll src/third_party/skia da29d70f1a59..20eafffd2d2f (1 commits) (flutter/engine#13223)
2019-10-18 skia-flutter-autoroll@skia.org Roll src/third_party/skia 63a387395751..da29d70f1a59 (11 commits) (flutter/engine#13221)
2019-10-18 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from WpvU_... to _G94w... (flutter/engine#13220)
2019-10-18 chinmaygarde@google.com Specify a human readable reason for an error from the embedder API. (flutter/engine#13218)
2019-10-18 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from _9Uy_... to KNygX... (flutter/engine#13219)
2019-10-17 iska.kaushik@gmail.com Reland ICU update to 64.2 (flutter/engine#13216)
2019-10-17 hterkelsen@users.noreply.github.com Use `window.devicePixelRatio` in the CanvasKit backend (flutter/engine#13192)
2019-10-17 gw280@google.com Re-enable WeakPtr ThreadChecker and fix associated failures (flutter/engine#12257)
2019-10-17 chinmaygarde@gmail.com Re-land "Custom compositor layers must take into account the device pixel ratio."
2019-10-17 chinmaygarde@gmail.com Add trace events around custom compositor callbacks. (flutter/engine#13212)
2019-10-17 skia-flutter-autoroll@skia.org Roll src/third_party/skia 93e853bf2b83..63a387395751 (9 commits) (flutter/engine#13208)
2019-10-17 bkonyi@google.com Roll src/third_party/dart 9b3c7f64d8..a61c775db8 (5 commits)
2019-10-17 chinmaygarde@gmail.com Document //flutter/runtime/dart_snapshot.h (flutter/engine#13196)
2019-10-17 chinmaygarde@gmail.com Revert "Custom compositor layers must take into account the device pixel ratio. (#13193)" (flutter/engine#13211)
2019-10-17 50856934+nturgut@users.noreply.github.com wrap the text in text editing. This was causing a missalingment issue in textarea. (flutter/engine#13207)
2019-10-17 chinmaygarde@google.com Custom compositor layers must take into account the device pixel ratio. (flutter/engine#13193)
2019-10-17 mouad.debbar@gmail.com [web] Environment variable to disable felt snapshot (flutter/engine#13187)
2019-10-17 bkonyi@google.com Roll src/third_party/dart 9e636b5ab4..9b3c7f64d8 (5 commits)
2019-10-17 skia-flutter-autoroll@skia.org Roll src/third_party/skia 0df7697235b4..93e853bf2b83 (1 commits) (flutter/engine#13205)
2019-10-17 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from ek5iQ... to WpvU_... (flutter/engine#13203)
2019-10-17 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from 6j3Gw... to _9Uy_... (flutter/engine#13202)
2019-10-17 skia-flutter-autoroll@skia.org Roll src/third_party/skia 6a19e03047cc..0df7697235b4 (1 commits) (flutter/engine#13200)
2019-10-17 bkonyi@google.com Roll src/third_party/dart 1e3e9ee04c..9e636b5ab4 (9 commits)
2019-10-17 skia-flutter-autoroll@skia.org Roll src/third_party/skia f29cb70281d5..6a19e03047cc (5 commits) (flutter/engine#13198)
2019-10-17 bkonyi@google.com Roll src/third_party/dart f020ce5d23..1e3e9ee04c (12 commits)


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 franciscojma@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