Chromium change:
https://chromium.googlesource.com/chromium/src/+/088816e5c47905f8b4e16dd867cddaf24fb4f55f
[bookmarks] Modularize bookmarks browser code
Moved production bookmarks browser code to chrome/browser/bookmarks
directory. Made some small changes along the way to simplify the
process.
* Moved all production bookmarks browser code to module.
* Added a separate target for files that can be modularized now.
* Added a separate gni list for files that can't be modularized now
which is included in chrome_java directly. Over time I will refactor
those files so that they are moved into the main modularized target.
* Merged ReadingListUtils and BookmarkUtils. In the long run, browser
reading list code shouldn't really exist since the concepts are
merged at the native level.
* Moved one method from BookmarkUtils to BookmarkModel to allow for
more files to be modularized.
Eventually some files, particularly implementations of interfaces
defined in chrome/browser/bookmarks, will live in the unmodularized
directory.
Bug: 395908100