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Visual rects are important for correct rendering. Without them we may
be confused by the correct SkPictures producing wrong rendering.

Trace-viewer has already supported visual-rects but incorrectly.
https://chromium-review.googlesource.com/c/catapult/+/963858 will fix
that.

Also output display item names which trace-viewer already supports.

Bug: 816854
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel
Change-Id: If819b4d9ba49ee583c0f7e25e97773e9cd9fde6f
Reviewed-on: https://chromium-review.googlesource.com/965166
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Reviewed-by: vmpstr <vmpstr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#544116}