[Win, Android] Don't create WebSandboxSupport when it would have no methods.

[Win, Android] Don't create WebSandboxSupport when it would have no methods.

This removes includes of android/ and win/WebSandboxSupport.h, and only
has the platform implementations create it on the platforms that do have
a WebSandboxSupport (Mac, Linux).

If this lands, the empty WebSandboxSupport headers can be removed from Blink
in a followup CL.

BUG=463506
Committed: https://crrev.com/bae266e499db1170ec00e13ab08f4c3b6b235ec8
Cr-Commit-Position: refs/heads/master@{#319653}

[jbroman, 2015-03-05 15:08:53]

jbroman@chromium.org changed reviewers:
+ eae@chromium.org, mkwst@chromium.org

[jbroman, 2015-03-05 15:08:54]

Since you expressed a desire to remove "empty" WebSandboxSupport, here's the
Chromium-side CL which would avoid having such classes. Unfortunately, removing
empty classes from the Chromium side too involves a bunch of more preprocessor
guards.

What do you think? Is there another way you'd prefer?

Once this LGTY, I'll find a content/ OWNER to review.

[eae, 2015-03-05 19:12:57]

Seems like a step in the right direction to me, thanks for doing this.

non-owner LGTM

[eae, 2015-03-05 19:12:57]

Seems like a step in the right direction to me, thanks for doing this.

non-owner LGTM

[Mike West, 2015-03-06 02:51:24]

I think this is an improvement, but I get what you mean about the additional
guards. I think I prefer the guards to an empty class, however. LGTM too. :)

[jbroman, 2015-03-06 02:53:31]

jbroman@chromium.org changed reviewers:
+ jochen@chromium.org

[jbroman, 2015-03-06 02:53:32]

+jochen for content/ OWNERS

[jochen (gone - plz use gerrit), 2015-03-09 15:29:44]

lgtm

[jbroman, 2015-03-09 15:37:15]

The CQ bit was checked by jbroman@chromium.org

[commit-bot: I haz the power, 2015-03-09 15:37:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/976163002/1

[commit-bot: I haz the power, 2015-03-09 16:53:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-09 16:53:57]

Patchset 1 (id:??) landed as
https://crrev.com/bae266e499db1170ec00e13ab08f4c3b6b235ec8
Cr-Commit-Position: refs/heads/master@{#319653}