Revert of DevTools: Correct Source Panel Show/Hide Toolbar buttons

Revert of DevTools: Correct Source Panel Show/Hide Toolbar buttons (patchset #1 id:1 of https://codereview.chromium.org/2600493002/ )

Reason for revert:
It turned out the icons are actually wrong. Compare:
- Without this patch (correct): http://imgur.com/a/eFCnz
- With this patch (incorrect): http://imgur.com/a/gJ24q


Original issue's description:
> DevTools: Correct Source Panel Show/Hide Toolbar buttons
> 
> Regression : Misalignment of 'Hide Navigator' and 'Hide Debugger' buttons is seen in devtools.
> 
> Flipped mask positions and removed—now unnecessary—rotation transforms around show/hide panel icon containers.
> 
> BUG=671930
> R=lushnikov@chromium.org
> TEST=Open Dev Tools, open Sources Pane, observe show/hide sidebar buttons
> are correctly aligned. crbug.com/671930
> 
> Review-Url: https://codereview.chromium.org/2600493002
> Cr-Commit-Position: refs/heads/master@{#445339}
> Committed: https://chromium.googlesource.com/chromium/src/+/4d2364eb32a5b242790324536efccd843cb81aa8

TBR=dgozman@chromium.org,pfeldman@chromium.org,me@jakehendy.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=671930
Review-Url: https://codereview.chromium.org/2655793003
Cr-Commit-Position: refs/heads/master@{#445983}
Committed: https://chromium.googlesource.com/chromium/src/+/d52b38109b89d346334cc0bc582328d6131fe720

[lushnikov, 2017-01-25 07:17:34]

The CQ bit was checked by lushnikov@chromium.org

[lushnikov, 2017-01-25 07:17:35]

Created Revert of DevTools: Correct Source Panel Show/Hide Toolbar buttons

[commit-bot: I haz the power, 2017-01-25 07:17:45]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-25 09:12:03]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485328654942250, "parent_rev":
"1f5232360acc5348c47acd773aef0bf73c389746", "commit_rev":
"d52b38109b89d346334cc0bc582328d6131fe720"}

[commit-bot: I haz the power, 2017-01-25 09:12:34]

Description was changed from

==========
Revert of DevTools: Correct Source Panel Show/Hide Toolbar buttons (patchset #1
id:1 of https://codereview.chromium.org/2600493002/ )

Reason for revert:
It turned out the icons are actually wrong. Compare:
- Without this patch (correct): http://imgur.com/a/eFCnz
- With this patch (incorrect): http://imgur.com/a/gJ24q


Original issue's description:
> DevTools: Correct Source Panel Show/Hide Toolbar buttons
> 
> Regression : Misalignment of 'Hide Navigator' and 'Hide Debugger' buttons is
seen in devtools.
> 
> Flipped mask positions and removed—now unnecessary—rotation transforms around
show/hide panel icon containers.
> 
> BUG=671930
> R=lushnikov@chromium.org
> TEST=Open Dev Tools, open Sources Pane, observe show/hide sidebar buttons
> are correctly aligned. crbug.com/671930
> 
> Review-Url: https://codereview.chromium.org/2600493002
> Cr-Commit-Position: refs/heads/master@{#445339}
> Committed:
https://chromium.googlesource.com/chromium/src/+/4d2364eb32a5b242790324536efc...

TBR=dgozman@chromium.org,pfeldman@chromium.org,me@jakehendy.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=671930
==========

to

==========
Revert of DevTools: Correct Source Panel Show/Hide Toolbar buttons (patchset #1
id:1 of https://codereview.chromium.org/2600493002/ )

Reason for revert:
It turned out the icons are actually wrong. Compare:
- Without this patch (correct): http://imgur.com/a/eFCnz
- With this patch (incorrect): http://imgur.com/a/gJ24q


Original issue's description:
> DevTools: Correct Source Panel Show/Hide Toolbar buttons
> 
> Regression : Misalignment of 'Hide Navigator' and 'Hide Debugger' buttons is
seen in devtools.
> 
> Flipped mask positions and removed—now unnecessary—rotation transforms around
show/hide panel icon containers.
> 
> BUG=671930
> R=lushnikov@chromium.org
> TEST=Open Dev Tools, open Sources Pane, observe show/hide sidebar buttons
> are correctly aligned. crbug.com/671930
> 
> Review-Url: https://codereview.chromium.org/2600493002
> Cr-Commit-Position: refs/heads/master@{#445339}
> Committed:
https://chromium.googlesource.com/chromium/src/+/4d2364eb32a5b242790324536efc...

TBR=dgozman@chromium.org,pfeldman@chromium.org,me@jakehendy.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=671930

Review-Url: https://codereview.chromium.org/2655793003
Cr-Commit-Position: refs/heads/master@{#445983}
Committed:
https://chromium.googlesource.com/chromium/src/+/d52b38109b89d346334cc0bc5823...
==========

[commit-bot: I haz the power, 2017-01-25 09:12:35]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/d52b38109b89d346334cc0bc5823...