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This CL sets up the directory for query tiles upboarding project. Also
added an interface for image loader system.

Bug: 1058534
Change-Id: Id4f60ba590d5da155a30087b3db8f1e3389b55e7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2088492Reviewed-by: David Trainor <dtrainor@chromium.org>
Reviewed-by: Shakti Sahu <shaktisahu@chromium.org>
Reviewed-by: Min Qin <qinmin@chromium.org>
Reviewed-by: Hesen Zhang <hesen@chromium.org>
Commit-Queue: Xing Liu <xingliu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#747807}