[lensoverlay] Fix race condition in fetch page bytes

InitializeOverlay() is called in multiple places by two async processes.
In order to ensure InitializeOverlay is only run once, InitializeOverlay
exits early if either the WebUI isn't ready or the initialization_data_
isn't ready. However, there was a race condition when fetching the page
content bytes where initialization_data_ was assigned, and then the
WebUI would become ready, causing InitializeOverlay to run and calling
StartQueryFlow twice. To rememdy this, I have more tightly coupled the
call to InitializeOverlay when assigning initialization_data_ to ensure
we aren't accidentally creating initialization_data_ and calling
InitializeOverlay before initialization_data_ is actually ready.

Bug: 368647545
Change-Id: Ib8020aded2c9afca15e4fac7eecde19fb28a5bc0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5878485
Reviewed-by: Ali Stanfield <stanfield@google.com>
Commit-Queue: Duncan Mercer <mercerd@google.com>
Cr-Commit-Position: refs/heads/main@{#1358997}
2 files changed
tree: d3d130da66872052bafb5ca1d84b045011413e9a
  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. crypto/
  16. dbus/
  17. device/
  18. docs/
  19. extensions/
  20. fuchsia_web/
  21. gin/
  22. google_apis/
  23. google_update/
  24. gpu/
  25. headless/
  26. infra/
  27. ios/
  28. ipc/
  29. media/
  30. mojo/
  31. native_client_sdk/
  32. net/
  33. pdf/
  34. ppapi/
  35. printing/
  36. remoting/
  37. rlz/
  38. sandbox/
  39. services/
  40. skia/
  41. sql/
  42. storage/
  43. styleguide/
  44. testing/
  45. third_party/
  46. tools/
  47. ui/
  48. url/
  49. webkit/
  50. .clang-format
  51. .clang-tidy
  52. .clangd
  53. .eslintrc.js
  54. .git-blame-ignore-revs
  55. .gitallowed
  56. .gitattributes
  57. .gitignore
  58. .gitmodules
  59. .gn
  60. .mailmap
  61. .rustfmt.toml
  62. .vpython3
  63. .yapfignore
  64. ATL_OWNERS
  65. AUTHORS
  66. BUILD.gn
  67. CODE_OF_CONDUCT.md
  68. codereview.settings
  69. CPPLINT.cfg
  70. CRYPTO_OWNERS
  71. DEPS
  72. DIR_METADATA
  73. LICENSE
  74. LICENSE.chromium_os
  75. OWNERS
  76. PRESUBMIT.py
  77. PRESUBMIT_test.py
  78. PRESUBMIT_test_mocks.py
  79. README.md
  80. WATCHLISTS
README.md

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