Gtk: Fix GCC 6.1.0 build

Gtk: Fix GCC 6.1.0 build

This CL removes PickButtonTintFromColors from gtk_ui.cc.  This
function was not used, and apparently only Gcc 6 caught this.

BUG=694497
R=erg@chromium.org

Review-Url: https://codereview.chromium.org/2722463003
Cr-Commit-Position: refs/heads/master@{#453286}
Committed: https://chromium.googlesource.com/chromium/src/+/4710b6a7757ede0b8dd6850a09f96d876ab48236

[Tom (Use chromium acct), 2017-02-27 18:15:26]

The CQ bit was checked by thomasanderson@google.com to run a CQ dry run

[commit-bot: I haz the power, 2017-02-27 18:16:07]

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

[Elliot Glaysher, 2017-02-27 18:20:20]

lgtm

BTW, This was the sort of code I was talking about when I was referring to how
we used to perform transformations on colors from gtk2 themes.

[commit-bot: I haz the power, 2017-02-27 19:08:11]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-02-27 19:08:12]

Dry run: This issue passed the CQ dry run.

[Tom (Use chromium acct), 2017-02-27 19:08:35]

The CQ bit was checked by thomasanderson@google.com

[commit-bot: I haz the power, 2017-02-27 19:09:09]

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, 2017-02-27 19:15:02]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1488222515794930, "parent_rev":
"cfe102adddc5a18fc2cc6c453e5342450895aa4b", "commit_rev":
"4710b6a7757ede0b8dd6850a09f96d876ab48236"}

[commit-bot: I haz the power, 2017-02-27 19:15:39]

Description was changed from

==========
Gtk: Fix GCC 6.1.0 build

This CL removes PickButtonTintFromColors from gtk_ui.cc.  This
function was not used, and apparently only Gcc 6 caught this.

BUG=694497
R=erg@chromium.org
==========

to

==========
Gtk: Fix GCC 6.1.0 build

This CL removes PickButtonTintFromColors from gtk_ui.cc.  This
function was not used, and apparently only Gcc 6 caught this.

BUG=694497
R=erg@chromium.org

Review-Url: https://codereview.chromium.org/2722463003
Cr-Commit-Position: refs/heads/master@{#453286}
Committed:
https://chromium.googlesource.com/chromium/src/+/4710b6a7757ede0b8dd6850a09f9...
==========

[commit-bot: I haz the power, 2017-02-27 19:15:40]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/4710b6a7757ede0b8dd6850a09f9...