Roll src/third_party/skia 5b257abb87d2..88bfed46ab6e (8 commits) (#7657)

https://skia.googlesource.com/skia.git/%2Blog/5b257abb87d2..88bfed46ab6e

git log 5b257abb87d2085b7f36fd5bc8f4a78a73942b2a..88bfed46ab6e0e4aec5416092a349e394c72ba59 --date=short --no-merges --format=%ad %ae %s
2019-01-31 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 794364ebd51c..258398020826 (1 commits)
2019-01-31 egdaniel@google.com Fix type in Andoird string.
2019-01-31 reed@google.com fix tiler to handle large float rects
2019-01-31 brianosman@google.com Update tracing docs slightly
2019-01-31 skia-autoroll@skia-public.iam.gserviceaccount.com Roll skia/third_party/skcms cd2260c9f528..0c0f6dee2779 (1 commits)
2019-01-31 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 5ebd2c0fafca..ebe5f7fad064 (1 commits)
2019-01-31 rmistry@google.com [cq.cfg] Remove cq.cfg.
2019-01-31 kjlubick@google.com Make cmake copy_directory instead of just files

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

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

If the roll is causing failures, please contact the current sheriff (borenet@google.com), and stop
the roller if necessary.

DEPS

@@ -23,7 +23,7 @@ vars = {
   'fuchsia_git': 'https://fuchsia.googlesource.com',
   'github_git': 'https://github.com',
   'skia_git': 'https://skia.googlesource.com',
-  'skia_revision': '5b257abb87d2085b7f36fd5bc8f4a78a73942b2a',
+  'skia_revision': '88bfed46ab6e0e4aec5416092a349e394c72ba59',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the

ci/licenses_golden/licenses_skia

-Signature: 922dfed5a65815e76f694eaba4265b33
+Signature: ac98185e7cc03c1dfdfe89363247082c
 
 UNUSED LICENSES:
 
@@ -2541,7 +2541,6 @@ FILE: ../../../third_party/skia/infra/bots/test_skia_bundled.isolate
 FILE: ../../../third_party/skia/infra/bots/tools/luci-go/linux64/isolate.sha1
 FILE: ../../../third_party/skia/infra/bots/tools/luci-go/mac64/isolate.sha1
 FILE: ../../../third_party/skia/infra/bots/tools/luci-go/win64/isolate.exe.sha1
-FILE: ../../../third_party/skia/infra/branch-config/cq.cfg
 FILE: ../../../third_party/skia/infra/config/recipes.cfg
 FILE: ../../../third_party/skia/infra/cts/whitelist_devices.json
 FILE: ../../../third_party/skia/infra/lottiecap/docker/gold-lottie-web-puppeteer/Dockerfile