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This makes WebLayer match Chrome's sad frame/plugin bitmap. This
required moving the images into //components.

Bug: 1023811
Change-Id: Ib3dedd7fb7a901bd1a393fac5f39b370c536046e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2250920Reviewed-by: Richard Coles <torne@chromium.org>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Clark DuVall <cduvall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#779934}