GitLab

Removes unused code for image cache, we use components/image_fetcher
now.

Bug: 1058534
Change-Id: I2f33cd418249d1770dd44f8cbb381f9c718f8553
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2162108
Commit-Queue: Xing Liu <xingliu@chromium.org>
Reviewed-by: Min Qin <qinmin@chromium.org>
Reviewed-by: Shakti Sahu <shaktisahu@chromium.org>
Reviewed-by: Hesen Zhang <hesen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#762042}