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This is ongoing refactoring of offline pages, in order to remove/isolate
Android-specific dependdencies. In this case, it's just a result
of:
tools/git/move_source_file.py chrome/browser/android/offline_pages/offline_page_bookmark_observer.* chrome/browser/offline_pages/

Bug: 722467
Change-Id: I35ecde79bee6b6fba7d7c27d75c5fb7be1799c00
Reviewed-on: https://chromium-review.googlesource.com/568565Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Yafei Duan <romax@chromium.org>
Commit-Queue: Dmitry Titov <dimich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#486202}