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This modification changes two trace operations for
"GetDecodedImageForDraw()" and "DrawWithImageFinished()"
from "cc"to "cc.debug" category. While running Canvas 2D
workloads with quite a lot canvas elements to be drawn,
excessive trace operations introduce expensive performance
overheads, especially for those hardware platforms with
integrated graphics cards or old graphics drivers.

Bug: 1051385

Change-Id: I7cb1b7a3afcb207ac6b7791f21dc621a20e42864
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2059771Reviewed-by: vmpstr <vmpstr@chromium.org>
Commit-Queue: vmpstr <vmpstr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#745468}