Revert "Add custom loopers for shadows"

This reverts commit efacd5360084bef0ad08873af99af266b2c48b36.

Reason for revert: breaking webview?
https://bugs.chromium.org/p/chromium/issues/detail?id=1178449

Original change's description:
> Add custom loopers for shadows
>
> SkDrawLooper is unused and untested in Skia, so moving the functionality
> into Chrome.
>
> Bug: skia:8672
> Change-Id: I412ff1f2fe51c87cbe3b173efb0fc6e56df4dabb
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2679292
> Commit-Queue: Mike Reed <reed@google.com>
> Reviewed-by: Florin Malita <fmalita@chromium.org>
> Reviewed-by: vmpstr <vmpstr@chromium.org>
> Reviewed-by: Scott Violet <sky@chromium.org>
> Reviewed-by: Aaron Krajeski <aaronhk@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#853590}

TBR=sky@chromium.org,vmpstr@chromium.org,fmalita@chromium.org,reed@google.com,aaronhk@chromium.org,chromium-scoped@luci-project-accounts.iam.gserviceaccount.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 1178477
Bug: 1178449
Bug: 1178351
Bug: skia:8672
Change-Id: I0ebb08735076a9e382a73260aa4dbf607675af8b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2696855
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
Cr-Commit-Position: refs/heads/master@{#854544}
40 files changed
tree: 557fd71508360f4c1e937b2e7ddacd6615fd2606
  1. android_webview/
  2. apps/
  3. ash/
  4. base/
  5. build/
  6. build_overrides/
  7. buildtools/
  8. cc/
  9. chrome/
  10. chromecast/
  11. chromeos/
  12. cloud_print/
  13. codelabs/
  14. components/
  15. content/
  16. courgette/
  17. crypto/
  18. dbus/
  19. device/
  20. docs/
  21. extensions/
  22. fuchsia/
  23. gin/
  24. google_apis/
  25. google_update/
  26. gpu/
  27. headless/
  28. infra/
  29. ios/
  30. ipc/
  31. jingle/
  32. media/
  33. mojo/
  34. native_client_sdk/
  35. net/
  36. pdf/
  37. ppapi/
  38. printing/
  39. remoting/
  40. rlz/
  41. sandbox/
  42. services/
  43. skia/
  44. sql/
  45. storage/
  46. styleguide/
  47. testing/
  48. third_party/
  49. tools/
  50. ui/
  51. url/
  52. weblayer/
  53. .clang-format
  54. .clang-tidy
  55. .eslintrc.js
  56. .git-blame-ignore-revs
  57. .gitattributes
  58. .gitignore
  59. .gn
  60. .vpython
  61. .vpython3
  62. .yapfignore
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. DEPS
  68. DIR_METADATA
  69. ENG_REVIEW_OWNERS
  70. LICENSE
  71. LICENSE.chromium_os
  72. OWNERS
  73. PRESUBMIT.py
  74. PRESUBMIT_test.py
  75. PRESUBMIT_test_mocks.py
  76. README.md
  77. WATCHLISTS
README.md

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