Revert "Copy code from https://github.com/golang/perf/tree/master/internal/stats"

This reverts commit 9a045f1d04a74d0723a642847bde4e02c02aa9f0.

Reason for revert: Found the upstream code at github.com/aclements/go-moremath so there's no need to do this copy.

Original change's description:
> Copy code from https://github.com/golang/perf/tree/master/internal/stats
>
> Because we can't import an 'internal' directory.
>
> Since that code has been stable for close to four years, this seems relatively
> safe.
>
> The code is copyright the Go authors using the Go License. See the added LICENSE
> file.
>
> The only changes are:
>   1. Add unittest.SmallTest()
>   2. gofmt -s -w .
>
> Bug: skia:10884
> Change-Id: I8d1d922686762a9799cc7ed2d57867c498ce93ab
> Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/331369
> Reviewed-by: Kevin Lubick <kjlubick@google.com>
> Commit-Queue: Joe Gregorio <jcgregorio@google.com>

TBR=jcgregorio@google.com,kjlubick@google.com

Change-Id: I305c17737bf6696a3669fe3fd4e7ce6b6b389cc2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:10884
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/331556
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
Commit-Queue: Joe Gregorio <jcgregorio@google.com>
22 files changed
tree: f3ba2497854d908ded18e8d7e10a0b78d494ff62
  1. am/
  2. android_ingest/
  3. android_stats/
  4. api/
  5. autoroll/
  6. bash/
  7. blamer/
  8. bugs-central/
  9. chromeextensions/
  10. comments/
  11. contestk/
  12. cq_watcher/
  13. ct/
  14. datahopper/
  15. debugger/
  16. debugger-app/
  17. debugger-assets/
  18. demos/
  19. docker/
  20. docker_pushes_watcher/
  21. docs/
  22. docserverk/
  23. dot/
  24. ds/
  25. fiddlek/
  26. firestore/
  27. get_service_account/
  28. git_cookie_authdaemon/
  29. gitsync/
  30. go/
  31. gold-client/
  32. golden/
  33. hashtag/
  34. html-template-minifier/
  35. infra/
  36. infra-sk/
  37. jsdoc/
  38. jsfiddle/
  39. k8s-checker/
  40. kube/
  41. leasing/
  42. licenses/
  43. machine/
  44. make/
  45. named-fiddles/
  46. new_element/
  47. particles/
  48. perdiff/
  49. perf/
  50. periodic-trigger/
  51. power/
  52. proberk/
  53. promk/
  54. pulld/
  55. puppeteer-tests/
  56. push/
  57. res/
  58. scripts/
  59. sheriff_emails/
  60. sk8s/
  61. skbug/
  62. skfe/
  63. skolo/
  64. skottie/
  65. status/
  66. task_driver/
  67. task_scheduler/
  68. tools/
  69. tree_status/
  70. trybot_updater/
  71. velero/
  72. webtools/
  73. .bazelrc
  74. .eslintrc.js
  75. .gitattributes
  76. .gitignore
  77. .mocharc.json
  78. BUILD.bazel
  79. build_infra_prod.sh
  80. cipd.ensure
  81. codereview.settings
  82. DATASTORE.md
  83. DEPS
  84. go.mod
  85. go.sum
  86. launch.md
  87. LICENSE
  88. Makefile
  89. package-lock.json
  90. package.json
  91. PRESUBMIT.py
  92. PRIVACY_POLICY.md
  93. README.md
  94. run_unittests
  95. run_unittests.go
  96. STYLEGUIDE.md
  97. tools.go
  98. tsconfig.json
  99. whitespace.txt
  100. WORKSPACE
README.md

Skia-Buildbot Repository

This repo contains infrastructure code for Skia.

Getting the Source Code

The main source code repository is a Git repository hosted at https://skia.googlesource.com/buildbot.git. It is possible to check out this repository directly with git clone or via go get.

Using git clone allows you to work in whatever directory you want. You will still need to set GOPATH in order to build some apps (recommended to put this in a cache dir). E.g.:

$ cd ${WORKDIR}
$ git clone https://skia.googlesource.com/buildbot.git
$ export GOPATH=${HOME}/.cache/gopath/$(basename ${WORKDIR})
$ mkdir $GOPATH
$ cd buildbot

Using go get will fetch the repository into your GOPATH directory along with all the Go dependencies. You will need to set GOPATH and GO111MODULE=on. E.g.:

$ export GOPATH=${WORKDIR}
$ export GO111MODULE=on
$ go get -u -t go.skia.org/infra/...
$ cd ${GOPATH}/src/go.skia.org/infra/

Note: go.skia.org is a custom import path and will only work if used like the examples here.

Install Node.js (not as root) and add the bin dir to your path. Optionally run npm install npm -g, as suggested by the npm getting started doc.

Install other dependencies:

$ sudo apt-get install python-django
$ go get -u github.com/kisielk/errcheck \
  golang.org/x/tools/cmd/goimports \
  go.chromium.org/luci/client/cmd/isolate
$ npm install -g polylint bower

Build ~everything:

$ make all

Generated Code

Some code is generated using go generate with external binaries. First, install the version of protoc referenced in the asset creation script and ensure it is on your PATH before other versions of protoc.

Install the necessary go packages:

$ go get -u \
  github.com/golang/protobuf/protoc-gen-go \
  golang.org/x/tools/cmd/stringer \
  google.golang.org/grpc \
  github.com/vektra/mockery/...

To generate code run in this directory:

$ go generate ./...

Running unit tests

Install Cloud SDK.

Use this command to run the presubmit tests:

$ ./run_unittests --small