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- Allows java to interact with the native CachedImageFetcher.
- Android-side tries to read from disk directly, so the JNI can be
skipped if the image is cached.

Binary-Size: Temporary increase to support quick rollback.
Bug: 897362
Change-Id: Ifd7c77e0eeef56ea49ec53b398b83f7cc134a479
Reviewed-on: https://chromium-review.googlesource.com/c/1297639Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Reviewed-by: Filip Gorski <fgorski@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Reviewed-by: Sky Malice <skym@chromium.org>
Commit-Queue: Brandon Wylie <wylieb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605874}