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This patch updates the FPS meter colors per the UX team’s suggestions:

| description                 | old color | new color                |
| --------------------------- | --------- | ------------------------ |
| dropped frame               | red       | #CA5B1DFF (orange/brown) |
| partial/missed frame        | yellow    | #FFF500FF (light yellow) |
| successfully rendered frame | green     | #AEDDFFBF (light blue)   |

Bug: chromium:1104087
Change-Id: I0654562172b5f8219502f9d121a8294c138ce0f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2384033Reviewed-by: Xida Chen <xidachen@chromium.org>
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#803809}