This is the expected look after repro steps above.

Deleted: Screenshot 2016-09-30 at 15.44.44.png 2.8 KB

	Screenshot 2016-09-30 at 15.44.44.png 2.8 KB View Download

Possibly better to fix in conjunction with updating the volume icon from a PNG image map to vector icons (see issue 646537).

Mohsen, assigning this to you to take a look at in conjunction with issue 646537.

Handing back to Yi to look at.

 Issue 662813  has been merged into this issue.

As described in  issue 662813 , it looks like this is indeed a regression likely caused by something we changed when doing MD work.

Yi and Mohsen, likely suspects are either changes to the volume slider code or changes to how we're selecting / rendering the volume icons. Please take a look and see if you can figure out what's happening here.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/480579a68ad8f86bd7e7b0d798d515550644fd9c

commit 480579a68ad8f86bd7e7b0d798d515550644fd9c
Author: yiyix <yiyix@chromium.org>
Date: Sun Nov 13 22:55:33 2016

Fix the volume strength icon to reflect the volume control clicks

- When the thumb is dragged to the left, the volume strength icon still
shows that the audio is not muted. This bug is caused by the internal
audio state, which takes int only, is different from the slider volume
state, which takes floats only.

- When user clicks on volume control slider, the volume strength icon is not
updated accordingly. This is because the volume strength icon was not called
to update.

TEST=MANUAL
- Build the Chrome OS to an actual device and test if the bugs are fixed.

BUG=651930,  651916 

Review-Url: https://codereview.chromium.org/2485353002
Cr-Commit-Position: refs/heads/master@{#431811}

[modify] https://crrev.com/480579a68ad8f86bd7e7b0d798d515550644fd9c/ash/common/system/chromeos/audio/volume_view.cc
[modify] https://crrev.com/480579a68ad8f86bd7e7b0d798d515550644fd9c/ash/common/system/chromeos/audio/volume_view.h

Verified on ChromeOS 9000.0.0, 56.0.2923.0