Display split view indicators when dragging Mohnstrudel tabs

Snapping the dragged tab to the correct position will be implemented in
a follow-up change.

This also adds a function GetSnapPositionForLocation() that takes just a
location and ignores window-specific properties, unlike
GetSnapPosition(). This is necessary since the DragImageView used by
DragDropController is not snappable itself. Instead, it is just a
placeholder for a new browser window that will be snapped.

Bug: 1069869
Change-Id: I4b9946c9e1f6484a7ec79f8ad71db518d9dd9c7c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2150025
Commit-Queue: Collin Baker <[email protected]>
Reviewed-by: Mitsuru Oshima <[email protected]>
Reviewed-by: Xiaoqian Dai <[email protected]>
Cr-Commit-Position: refs/heads/master@{#763510}
4 files changed
tree: dfa894450c52fa887f29f37f70afb9b1eb387421
  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. components/
  14. content/
  15. courgette/
  16. crypto/
  17. dbus/
  18. device/
  19. docs/
  20. extensions/
  21. fuchsia/
  22. gin/
  23. google_apis/
  24. google_update/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. jingle/
  31. media/
  32. mojo/
  33. native_client_sdk/
  34. net/
  35. pdf/
  36. ppapi/
  37. printing/
  38. remoting/
  39. rlz/
  40. sandbox/
  41. services/
  42. skia/
  43. sql/
  44. storage/
  45. styleguide/
  46. testing/
  47. third_party/
  48. tools/
  49. ui/
  50. url/
  51. weblayer/
  52. .clang-format
  53. .clang-tidy
  54. .eslintrc.js
  55. .git-blame-ignore-revs
  56. .gitattributes
  57. .gitignore
  58. .gn
  59. .vpython
  60. .vpython3
  61. .yapfignore
  62. AUTHORS
  63. BUILD.gn
  64. CODE_OF_CONDUCT.md
  65. codereview.settings
  66. DEPS
  67. ENG_REVIEW_OWNERS
  68. LICENSE
  69. LICENSE.chromium_os
  70. OWNERS
  71. PRESUBMIT.py
  72. PRESUBMIT_test.py
  73. PRESUBMIT_test_mocks.py
  74. README.md
  75. WATCHLISTS
README.md

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For historical reasons, there are some small top level directories. Now the guidance is that new top level directories are for product (e.g. Chrome, Android WebView, Ash). Even if these products have multiple executables, the code should be in subdirectories of the product.