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This is a reland of b5018edf

Original change's description:
> [Offline indicator v2] Add Java animations
> 
> This CL implements the color and text transition animations that run when
> showing or hiding the status indicator.
> 
> Show:
> 1- Transition the status bar color.
> 2- Wait for the browser controls animation in cc to finish.
> 3- Fade in text.
> 
> Hide:
> 1- Transition the status bar and the indicator color.
> 2- Wait 2 seconds.
> 3- Fade out text, and transition the status bar and indicator color back
> to the original status bar color.
> 4- Let the browser controls hide animation run in cc.
> 
> Bug: 989148
> Change-Id: If19a51e6c5091436d78e34ef50f11ffa0118ee0d
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2067095
> Commit-Queue: Sinan Sahin <sinansahin@google.com>
> Reviewed-by: Matthew Jones <mdjones@chromium.org>
> Reviewed-by: Theresa  <twellington@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#747080}

Bug: 989148
Change-Id: I0bf7813c4ef7833d66e449863d16cc1068bc9572
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2090015Reviewed-by: Theresa  <twellington@chromium.org>
Commit-Queue: Sinan Sahin <sinansahin@google.com>
Cr-Commit-Position: refs/heads/master@{#747439}