Roll fuchsia/sdk/core/linux-amd64 from R6MHy... to ySA6l...

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

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, who should
be CC'd on the roll, and stop the roller if necessary.

Copies and renames the architecture-dependent iOS variants of
gen_snapshot to a destination directory. Now that the armv7-emitting
variant of gen_snapshot is 64-bit we can no longer bundle up
gen_snapshot as a fat binary with the x86 armv7 variant merged with the
x86_64 arm64 variant.

* GN changes for simarm_x64

* GN changes for simarm_x64

* Cleanup a bit

* Guard simarm_x64 behind a flag

* Remove flag

* Remove Mac specificity

Also fixes the architecture of the bundled SO files.

* Remove one last final call to AddPart()

* fix merge conflict

* fix how i merged

* remove add part again

* remove pointer syntax

* fix formatting

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:2k-0epsqEV14oZvIxpS-jHkPhZa837aSNjEj14wd73MC to fuchsia/sdk/core/linux-amd64:R6MHyz58h4cLuv1Odwzf2JWJkrYee4D6QKR92VinTggC (#10305)

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:2k-0epsqEV14oZvIxpS-jHkPhZa837aSNjEj14wd73MC to fuchsia/sdk/core/linux-amd64:R6MHyz58h4cLuv1Odwzf2JWJkrYee4D6QKR92VinTggC

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

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, who should
be CC'd on the roll, and stop the roller if necessary.

SingleFrameCodec had been holding a persistent handle to the peer Dart object
while waiting for the decoder callback.  However, Dart code could call
Codec.dispose during that interval, which would cause the Dart peer to drop
its reference to the SingleFrameCodec and potentially delete the
SingleFrameCodec.

Fixes https://github.com/flutter/flutter/issues/36631

Roll fuchsia/sdk/core/mac-amd64 from fuchsia/sdk/core/mac-amd64:TAkpmqxKgauDvmpeaOTOAbYsnz1nWuqznTirppN0dGoC to fuchsia/sdk/core/mac-amd64:bswmziOk2a7sku7aG0fnZO7sQOFPK_XBy58QPcqsugwC (#10300)

Roll fuchsia/sdk/core/mac-amd64 from fuchsia/sdk/core/mac-amd64:TAkpmqxKgauDvmpeaOTOAbYsnz1nWuqznTirppN0dGoC to fuchsia/sdk/core/mac-amd64:bswmziOk2a7sku7aG0fnZO7sQOFPK_XBy58QPcqsugwC

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

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, who should
be CC'd on the roll, and stop the roller if necessary.

https://skia.googlesource.com/skia.git/+log/c876404e64d2..83d8a949ae22

git log c876404e64d2..83d8a949ae22 --date=short --no-merges --format='%ad %ae %s'
2019-07-31 senorblanco@chromium.org First implementation of GrDawnVaryingHandler.
2019-07-31 bungeman@google.com Allow HarfBuzz to massage the character stream.
2019-07-31 senorblanco@chromium.org Dawn: update to onSupportedReadColorType().
2019-07-31 egdaniel@google.com Don't have GrVk*CommandBuffer derive from GrVkResource.
2019-07-31 ianloic@google.com [fuchsia] Update for new FIDL API
2019-07-31 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).

Created with:
  gclient setdep -r src/third_party/skia@83d8a949ae22

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, who should
be CC'd on the roll, and stop the roller if necessary.


Bug: None
TBR=benjaminwagner@google.com

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:E8lhQA7KKqhzZkfqaF8zKnqOMy88-Z3lf4uBnUNHa4AC to fuchsia/sdk/core/linux-amd64:2k-0epsqEV14oZvIxpS-jHkPhZa837aSNjEj14wd73MC (#10301)

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:E8lhQA7KKqhzZkfqaF8zKnqOMy88-Z3lf4uBnUNHa4AC to fuchsia/sdk/core/linux-amd64:2k-0epsqEV14oZvIxpS-jHkPhZa837aSNjEj14wd73MC

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

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, who should
be CC'd on the roll, and stop the roller if necessary.

dart-lang/sdk@bd049f5b53 [llvm] Fix bit target definition on Windows - it needs .exe extension
dart-lang/sdk@782243640b Fix NPE (issue 37677)
dart-lang/sdk@2390a25341 [dartdevc] emit base types (void/dynamic) eagerly
dart-lang/sdk@0451f598cc Warn about UI-as-Code features in const context with low SDK constraint
dart-lang/sdk@8293e96ba9 Fix INFERENCE_FAILURE_ON_COLLECTION_LITERAL to allow for dynamically-typed elements.
dart-lang/sdk@3b1cb90146 allow void in extension declaration header
dart-lang/sdk@9ecd475c03 Copy pkg/analysis_server/language_model to dart-sdk/model for x64 builds
dart-lang/sdk@58d3d71df4 [fasta] Don't report errors on NNBD features if experiment is enabled
dart-lang/sdk@6c1523410f Flow analysis: Create definite assignment test cases.
dart-lang/sdk@973a236558 Fail analyzer ID tests if errors are found.
dart-lang/sdk@7557a14a74 Move test cases from type_promotion_test.dart into front end.
dart-lang/sdk@9f2845e39b Resolve index operators from extensions
dart-lang/sdk@cdf56d7892 [vm] Ensure we wait for the service-isolate to boot-up before communicating with it
dart-lang/sdk@d3fbbf8b5a Fix the dart-sdk-linux task by not building analysis server on 32 bit ARM architecture
dart-lang/sdk@3fa3f0e62d Enhance the comment for TypeParameterElement.bounds to capture information from a previous CL
dart-lang/sdk@8cce940579 [API] Makes Dart_InvokeVMServiceMethod errors more specific.
dart-lang/sdk@2e197ae4de [vm/compiler] Tweaks and additions to IL serializer/S-expressions.
dart-lang/sdk@2875b1bcce [kernel][nnbd] Keep declared nullability on type parameter types
dart-lang/sdk@59aa4cd693 [cfe] Merge more Kernel*Builder classes into *Builder classes
dart-lang/sdk@fe2f82650b [cfe] Remove generics from Loader and UnresolvedType
dart-lang/sdk@b7eeacfc24 [infra] Add script to publish results.json to Cloud Pub/Sub
dart-lang/sdk@0a85a8878d [vm/llvm] Use relative paths in LLVM build rules.
dart-lang/sdk@20e4c74f7f [fasta][nnbd] Print NNBD type modifiers in Kernel's text representation
dart-lang/sdk@776f2d34e9 Migration: implement "exact nullability" propagation.
dart-lang/sdk@40e6954a30 [vm/bytecode] Update error messages for dart:mirrors and dart:ffi
dart-lang/sdk@1e80e917b6 [ VM / Service ] Update package:vm_service to support service protocol 3.25
dart-lang/sdk@5f32027e1d [ VM / Service ] Add getInboundReferences, getRetainingPath RPCs and InboundReferences, InboundReference, RetainingPath, RetainingObject objects.
dart-lang/sdk@e91e3b816b Revert "[vm] Fix deadlock in isolate shutdown."
dart-lang/sdk@18e4e7830d [ VM / Service ] Bump VM service version to 3.24
dart-lang/sdk@8591778065 [ VM / Service ] Added 'operatingSystem' property to VM object
dart-lang/sdk@de013a4b51 Add an optional path parameter to parseString.
dart-lang/sdk@d8160e0cb1 [vm] Fix deadlock in isolate shutdown.
dart-lang/sdk@bb34cfeb25 [dart/fuzzer] Extend list of forbidden classes/methods
dart-lang/sdk@361d27e20b [dart/vm] Fix bug in parallel move/register allocator
dart-lang/sdk@f166a82b19 [vm/bytecode] Improvements in bytecode debugger.
dart-lang/sdk@773f8d53ed Reland "[llvm] Add initial scaffolding"
dart-lang/sdk@f56a6a4246 test_matrix.json changes for simarm_x64

* [fuchsia] Make cirrus build fuchsia artifacts

* restrict to debug mode for better build times

* fix host gen_snapshot

* change buildroot version

* [macos] Reland function refactor

* Fix bug

https://skia.googlesource.com/skia.git/+log/6808e2d1faac..c876404e64d2

git log 6808e2d1faac..c876404e64d2 --date=short --no-merges --format='%ad %ae %s'
2019-07-31 halcanary@google.com tools/sk_app/macos: support command key
2019-07-31 benjaminwagner@google.com Set mac_sdk_min=10.13 for CommandBuffer builds
2019-07-31 halcanary@google.com SkPDF: SkPDFMakeShader handles pathological inputs better.
2019-07-31 bsalomon@google.com Remove GrCaps::SupportedRead::fSwizzle and supporting code
2019-07-31 robertphillips@google.com Add LUM8 case to GrGLCaps::getYUVAColorTypeFromBackendFormat
2019-07-31 aparchur@google.com [skottie] Rename TextValue to TextPropertyValue and make public.

Created with:
  gclient setdep -r src/third_party/skia@c876404e64d2

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, who should
be CC'd on the roll, and stop the roller if necessary.


Bug: None
TBR=benjaminwagner@google.com

Roll fuchsia/sdk/core/mac-amd64 from fuchsia/sdk/core/mac-amd64:A4Ah4g0K30dWnbolQ7Z3zyXapbAyy3d9l4IeLGAG9YQC to fuchsia/sdk/core/mac-amd64:TAkpmqxKgauDvmpeaOTOAbYsnz1nWuqznTirppN0dGoC (#10291)

Roll fuchsia/sdk/core/mac-amd64 from fuchsia/sdk/core/mac-amd64:A4Ah4g0K30dWnbolQ7Z3zyXapbAyy3d9l4IeLGAG9YQC to fuchsia/sdk/core/mac-amd64:TAkpmqxKgauDvmpeaOTOAbYsnz1nWuqznTirppN0dGoC


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

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, who should
be CC'd on the roll, and stop the roller if necessary.

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:6j9WXOOtqKZzSKIgQi-12GJ1MYzPDJvq-RLAtpJpGB0C to fuchsia/sdk/core/linux-amd64:E8lhQA7KKqhzZkfqaF8zKnqOMy88-Z3lf4uBnUNHa4AC (#10290)

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:6j9WXOOtqKZzSKIgQi-12GJ1MYzPDJvq-RLAtpJpGB0C to fuchsia/sdk/core/linux-amd64:E8lhQA7KKqhzZkfqaF8zKnqOMy88-Z3lf4uBnUNHa4AC


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

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, who should
be CC'd on the roll, and stop the roller if necessary.

Test: Ran test programs on Fuchsia and dumped Scenic scene graph using
`fx shell cat /hub/c/scenic.cmx/*/out/debug/dump-scenes`
Inspected scene graph to confirm removal of ShapeNodes.
FL-284 #done

Roll src/third_party/skia a13c7744f154f434b5415688280b4e127a2ce8f5..6808e2d1faaccd6fc739f436c2470f199aa4d1a8 (2 commits) (#10281)


https://skia.googlesource.com/skia.git
/compare/a13c7744f154..6808e2d1faac

git log a13c7744f154..6808e2d1faac --date=short --no-merges --format=%ad %ae %s
2019-07-31 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update Go deps
2019-07-31 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 cbabea734cbd..1ebe6014389e (9 commits)

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 (benjaminwagner@google.com), and stop
the roller if necessary.

Roll fuchsia/sdk/core/mac-amd64 from fuchsia/sdk/core/mac-amd64:vjX_DhfQqJjsX26pl5-vNNM3Lfb0Vwl9l09abYj-D1oC to fuchsia/sdk/core/mac-amd64:A4Ah4g0K30dWnbolQ7Z3zyXapbAyy3d9l4IeLGAG9YQC (#10280)

Roll fuchsia/sdk/core/mac-amd64 from fuchsia/sdk/core/mac-amd64:vjX_DhfQqJjsX26pl5-vNNM3Lfb0Vwl9l09abYj-D1oC to fuchsia/sdk/core/mac-amd64:A4Ah4g0K30dWnbolQ7Z3zyXapbAyy3d9l4IeLGAG9YQC


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

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, who should
be CC'd on the roll, and stop the roller if necessary.

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:om5F-s2gIabc-Toen2VT6nnosnQvTKI1e6Nz2zg8P40C to fuchsia/sdk/core/linux-amd64:6j9WXOOtqKZzSKIgQi-12GJ1MYzPDJvq-RLAtpJpGB0C (#10279)

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:om5F-s2gIabc-Toen2VT6nnosnQvTKI1e6Nz2zg8P40C to fuchsia/sdk/core/linux-amd64:6j9WXOOtqKZzSKIgQi-12GJ1MYzPDJvq-RLAtpJpGB0C


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

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, who should
be CC'd on the roll, and stop the roller if necessary.

Roll src/third_party/skia 6980c4e0aef8ab9546e25d8160c05a716f1c3ce3..a13c7744f154f434b5415688280b4e127a2ce8f5 (1 commits) (#10278)


https://skia.googlesource.com/skia.git
/compare/6980c4e0aef8..a13c7744f154

git log 6980c4e0aef8..a13c7744f154 --date=short --no-merges --format=%ad %ae %s
2019-07-31 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader e6092f3bc901..324bdfed0692 (6 commits)

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 (benjaminwagner@google.com), and stop
the roller if necessary.

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:MuVYOXXS9sxCbxvFCJDHfuF5pkWXIgS0uUlBFdIuQPsC to fuchsia/sdk/core/linux-amd64:om5F-s2gIabc-Toen2VT6nnosnQvTKI1e6Nz2zg8P40C (#10277)

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:MuVYOXXS9sxCbxvFCJDHfuF5pkWXIgS0uUlBFdIuQPsC to fuchsia/sdk/core/linux-amd64:om5F-s2gIabc-Toen2VT6nnosnQvTKI1e6Nz2zg8P40C


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

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, who should
be CC'd on the roll, and stop the roller if necessary.

Roll fuchsia/sdk/core/mac-amd64 from fuchsia/sdk/core/mac-amd64:kSzcB40iCqsXbCka_VUf4jB5iRl2G9gLM_xDbbGg5GwC to fuchsia/sdk/core/mac-amd64:vjX_DhfQqJjsX26pl5-vNNM3Lfb0Vwl9l09abYj-D1oC (#10276)

Roll fuchsia/sdk/core/mac-amd64 from fuchsia/sdk/core/mac-amd64:kSzcB40iCqsXbCka_VUf4jB5iRl2G9gLM_xDbbGg5GwC to fuchsia/sdk/core/mac-amd64:vjX_DhfQqJjsX26pl5-vNNM3Lfb0Vwl9l09abYj-D1oC


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

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, who should
be CC'd on the roll, and stop the roller if necessary.

Roll src/third_party/skia 6e86c1b05eeedc3b6be0e98001b7b5d6bab71b74..6980c4e0aef8ab9546e25d8160c05a716f1c3ce3 (4 commits) (#10275)


https://skia.googlesource.com/skia.git
/compare/6e86c1b05eee..6980c4e0aef8

git log 6e86c1b05eee..6980c4e0aef8 --date=short --no-merges --format=%ad %ae %s
2019-07-30 egdaniel@google.com Remove isConfigCopyable from GrCaps.
2019-07-30 fmalita@chromium.org [skottie] Safe div-by-zero in LevelsEffectAdapter::apply
2019-07-30 michaelludwig@google.com Remove use of SkDropShadowImageFilter::ShadowMode internally
2019-07-30 bungeman@google.com Fix potential use of uninitialized data in with GDI.

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 (benjaminwagner@google.com), and stop
the roller if necessary.

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:pGTb76UZ-PsJzdatSNkJIkEGLESaGa_S2wtZfgHPU5EC to fuchsia/sdk/core/linux-amd64:MuVYOXXS9sxCbxvFCJDHfuF5pkWXIgS0uUlBFdIuQPsC (#10274)

Roll fuchsia/sdk/core/linux-amd64 from fuchsia/sdk/core/linux-amd64:pGTb76UZ-PsJzdatSNkJIkEGLESaGa_S2wtZfgHPU5EC to fuchsia/sdk/core/linux-amd64:MuVYOXXS9sxCbxvFCJDHfuF5pkWXIgS0uUlBFdIuQPsC


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

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, who should
be CC'd on the roll, and stop the roller if necessary.

Roll fuchsia/sdk/core/mac-amd64 from fuchsia/sdk/core/mac-amd64:Z7vUHOlojg6n7o-K4Knm474YKdmi1a8pX7Klq_YmkpUC to fuchsia/sdk/core/mac-amd64:kSzcB40iCqsXbCka_VUf4jB5iRl2G9gLM_xDbbGg5GwC (#10270)

Roll fuchsia/sdk/core/mac-amd64 from fuchsia/sdk/core/mac-amd64:Z7vUHOlojg6n7o-K4Knm474YKdmi1a8pX7Klq_YmkpUC to fuchsia/sdk/core/mac-amd64:kSzcB40iCqsXbCka_VUf4jB5iRl2G9gLM_xDbbGg5GwC


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

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, who should
be CC'd on the roll, and stop the roller if necessary.

Scenic has now fully transitioned to clipping by adding lists
of planes to Nodes; the old approach of adding a ShapeNode
"part" is now a no-op, and is safe to remove.

Roll src/third_party/skia e9cb76221597ac9e9b0bf009ab1a843da8428d83..6e86c1b05eeedc3b6be0e98001b7b5d6bab71b74 (16 commits) (#10266)


https://skia.googlesource.com/skia.git
/compare/e9cb76221597..6e86c1b05eee

git log e9cb76221597..6e86c1b05eee --date=short --no-merges --format=%ad %ae %s
2019-07-30 michaelludwig@google.com Remove bad SK_API tag from internal class
2019-07-30 reed@google.com move all picture version crap into single header
2019-07-30 brianosman@google.com Explicitly fetch "main" in the runtime color filter
2019-07-30 mtklein@google.com test a (the) zero-arg program
2019-07-30 jvanverth@google.com Revert "Use shared mode for Metal texture upload buffers."
2019-07-30 bsalomon@google.com Always use sized internal formats when creating GL render buffers.
2019-07-30 egdaniel@google.com Dump GrGLCaps format table in json dump.
2019-07-30 mtklein@google.com add vmovdqa(ymm,ymm)
2019-07-30 michaelludwig@google.com Hide SkImageFilter subclasses in CPP files
2019-07-30 csmartdalton@google.com Add GrMipMapsStatus to GrTextureProxy
2019-07-30 robertphillips@google.com Propagate GrRenderable flag to GrCaps::getBackendFormatFromColorType
2019-07-30 mtklein@google.com more unit tests
2019-07-26 bsalomon@google.com Lift GrRenderTarget::transferFrom to GrSurfaceContext.
2019-07-30 halcanary@google.com editor: try to fix moltenvk bots
2019-07-30 bsalomon@google.com Always set GL_[UN]PACK_ALIGNMENT to 1.
2019-07-30 senorblanco@chromium.org Dawn backend: add asserts for unimplemented functionality.

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 (benjaminwagner@google.com), and stop
the roller if necessary.