content: updates direct_sockets_test_utils to use ShellContentBrowserClient

Tests using IsolatedWebAppContentBrowserClient install it as the
ContentBrowserClient. ContentBrowserClient may be used at random
points for necessary functionality, such as registering mojo
interfaces. If this functionality is not there, the renderer may
be killed, leading to flake. This patch changes
IsolatedWebAppContentBrowserClient to subclass
ShellContentBrowserClient.

There's a couple of other changes here:
. Updates ShellContentBrowserClient so that more than once instance
  can be created
. Moves direct_sockets_test_utils from test_support target to
  content_browsertests target. direct_sockets_test_utils now depends
  upon ShellContentBrowserClient. The target containing
  ShellContentBrowserClient depends upon test_support, so
  direct_sockets_test_utils needs to move (otherwise we end up with
  a cycle).

Bug: 1406282

Change-Id: Id7b676e352ed469d82084ebbefb3aa3d5e908cbd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4214276
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1101093}
4 files changed
tree: b7d83c0e2db028f3bf2844707d3dda68e525ab50
  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. codelabs/
  13. components/
  14. content/
  15. courgette/
  16. crypto/
  17. dbus/
  18. device/
  19. docs/
  20. extensions/
  21. fuchsia_web/
  22. gin/
  23. google_apis/
  24. google_update/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. media/
  31. mojo/
  32. native_client_sdk/
  33. net/
  34. pdf/
  35. ppapi/
  36. printing/
  37. remoting/
  38. rlz/
  39. sandbox/
  40. services/
  41. skia/
  42. sql/
  43. storage/
  44. styleguide/
  45. testing/
  46. third_party/
  47. tools/
  48. ui/
  49. url/
  50. weblayer/
  51. .clang-format
  52. .clang-tidy
  53. .eslintrc.js
  54. .git-blame-ignore-revs
  55. .gitattributes
  56. .gitignore
  57. .gn
  58. .mailmap
  59. .rustfmt.toml
  60. .vpython3
  61. .yapfignore
  62. ATL_OWNERS
  63. AUTHORS
  64. BUILD.gn
  65. CODE_OF_CONDUCT.md
  66. codereview.settings
  67. DEPS
  68. DIR_METADATA
  69. LICENSE
  70. LICENSE.chromium_os
  71. OWNERS
  72. PRESUBMIT.py
  73. PRESUBMIT_test.py
  74. PRESUBMIT_test_mocks.py
  75. README.md
  76. WATCHLISTS
README.md

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