Remove OnThemeChanged and associated unused message

Remove OnThemeChanged and associated ViewMsg_ThemeChanged

ViewMsg_ThemeChanged was never sent, and even if it was, the only code
path that did anything was

#if USE_AURA
// nothing
#elif OS_WIN
// do stuff
...

so it was never going to run. Noticed while trying to clean up
NativeThemeWin usage from Blink, which also makes little-to-no sense and
causes the linked bug.

R=jam@chromium.org
BUG=258201
Committed: https://crrev.com/41dca1f3e19cc520750eee94f11d4e8332cd16b3
Cr-Commit-Position: refs/heads/master@{#415371}

[scottmg, 2016-08-27 00:21:31]

The CQ bit was checked by scottmg@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-27 00:22:27]

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

[scottmg, 2016-08-27 02:06:17]

Description was changed from

==========
Remove OnThemeChanged and associated ViewMsg_ThemeChanged

ViewMsg_ThemeChanged was never sent, and even if it was, the only code
path that did anything was

// nothing
// do stuff
...

so it was never going to run. Noticed while trying to clean up
NativeThemeWin usage from Blink, which also makes little-to-no sense and
causes the linked bug.

R=jam@chromium.org
BUG=258201
==========

to

==========
Remove OnThemeChanged and associated ViewMsg_ThemeChanged

ViewMsg_ThemeChanged was never sent, and even if it was, the only code
path that did anything was

#if USE_AURA
// nothing
#elif OS_WIN
// do stuff
...

so it was never going to run. Noticed while trying to clean up
NativeThemeWin usage from Blink, which also makes little-to-no sense and
causes the linked bug.

R=jam@chromium.org
BUG=258201
==========

[commit-bot: I haz the power, 2016-08-27 02:38:37]

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

[commit-bot: I haz the power, 2016-08-27 02:38:38]

Dry run: Try jobs failed on following builders:
  win_chromium_x64_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[scottmg, 2016-08-27 04:04:13]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2016-08-27 04:04:48]

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, 2016-08-27 04:04:49]

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

[commit-bot: I haz the power, 2016-08-27 04:04:49]

No L-G-T-M from a valid reviewer yet. 
CQ run can only be started by full committers or once the patch has
received an L-G-T-M from a full committer.
Even if an L-G-T-M may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[scottmg, 2016-08-27 15:12:21]

The CQ bit was checked by scottmg@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-27 15:12:28]

Dry run: 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, 2016-08-27 16:01:26]

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

[commit-bot: I haz the power, 2016-08-27 16:01:26]

Dry run: This issue passed the CQ dry run.

[scottmg, 2016-08-29 16:54:46]

The CQ bit was checked by scottmg@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-29 16:57:10]

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

[jam, 2016-08-30 16:34:40]

lgtm

[scottmg, 2016-08-30 16:35:15]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2016-08-30 16:35:36]

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, 2016-08-30 16:41:23]

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

[commit-bot: I haz the power, 2016-08-30 16:41:24]

Try jobs failed on following builders:
  chromium_presubmit on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[scottmg, 2016-08-30 17:10:51]

scottmg@chromium.org changed reviewers:
+ jschuh@chromium.org

[scottmg, 2016-08-30 17:10:52]

+jschuh for content/common/view_messages.h removal.

[scottmg, 2016-08-30 18:30:40]

scottmg@chromium.org changed reviewers:
+ wfh@chromium.org

[scottmg, 2016-08-30 18:30:41]

how about +wfh for a trivial stamp for view_messages.h?

[Will Harris, 2016-08-30 18:35:54]

trivial rs lgtm

[scottmg, 2016-08-30 18:38:50]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2016-08-30 18:39:46]

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, 2016-08-30 18:46:27]

Description was changed from

==========
Remove OnThemeChanged and associated ViewMsg_ThemeChanged

ViewMsg_ThemeChanged was never sent, and even if it was, the only code
path that did anything was

#if USE_AURA
// nothing
#elif OS_WIN
// do stuff
...

so it was never going to run. Noticed while trying to clean up
NativeThemeWin usage from Blink, which also makes little-to-no sense and
causes the linked bug.

R=jam@chromium.org
BUG=258201
==========

to

==========
Remove OnThemeChanged and associated ViewMsg_ThemeChanged

ViewMsg_ThemeChanged was never sent, and even if it was, the only code
path that did anything was

#if USE_AURA
// nothing
#elif OS_WIN
// do stuff
...

so it was never going to run. Noticed while trying to clean up
NativeThemeWin usage from Blink, which also makes little-to-no sense and
causes the linked bug.

R=jam@chromium.org
BUG=258201
==========

[commit-bot: I haz the power, 2016-08-30 18:46:29]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2016-08-30 18:49:16]

Description was changed from

==========
Remove OnThemeChanged and associated ViewMsg_ThemeChanged

ViewMsg_ThemeChanged was never sent, and even if it was, the only code
path that did anything was

#if USE_AURA
// nothing
#elif OS_WIN
// do stuff
...

so it was never going to run. Noticed while trying to clean up
NativeThemeWin usage from Blink, which also makes little-to-no sense and
causes the linked bug.

R=jam@chromium.org
BUG=258201
==========

to

==========
Remove OnThemeChanged and associated ViewMsg_ThemeChanged

ViewMsg_ThemeChanged was never sent, and even if it was, the only code
path that did anything was

#if USE_AURA
// nothing
#elif OS_WIN
// do stuff
...

so it was never going to run. Noticed while trying to clean up
NativeThemeWin usage from Blink, which also makes little-to-no sense and
causes the linked bug.

R=jam@chromium.org
BUG=258201

Committed: https://crrev.com/41dca1f3e19cc520750eee94f11d4e8332cd16b3
Cr-Commit-Position: refs/heads/master@{#415371}
==========

[commit-bot: I haz the power, 2016-08-30 18:49:17]

Patchset 3 (id:??) landed as
https://crrev.com/41dca1f3e19cc520750eee94f11d4e8332cd16b3
Cr-Commit-Position: refs/heads/master@{#415371}