Revert of [MacViews] Implement size constraints for app windows.

Revert of [MacViews] Implement size constraints for app windows. (patchset #9 id:160001 of https://codereview.chromium.org/1023083002/)

Reason for revert:
Broke GN build:
http://build.chromium.org/p/chromium.mac/builders/Mac%20GN/builds/6200

Original issue's description:
> [MacViews] Implement size constraints for app windows.
>
> This works the same way as NativeAppWindowCocoa by setting
> properties on the NSWindow in OnSizeConstraintsChanged.
>
> This also moves some code in common with NativeAppWindowCocoa
> out to c/b/ui/cocoa/apps/nswindow_util.h. More code will be moved
> there as they're implemented on MacViews, e.g.
> CalculateDraggableRegions.
>
> BUG=459877
TBR=tapted@chromium.org,thakis@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=459877
Committed: https://crrev.com/cc9931870450252a8c84d08f7c671a0a695a266c
Cr-Commit-Position: refs/heads/master@{#323378}

[jackhou1, 2015-04-02 00:35:01]

Created Revert of [MacViews] Implement size constraints for app windows.

[commit-bot: I haz the power, 2015-04-02 00:36:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1051953003/1

[commit-bot: I haz the power, 2015-04-02 00:38:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-03 20:20:22]

Patchset 1 (id:??) landed as
https://crrev.com/cc9931870450252a8c84d08f7c671a0a695a266c
Cr-Commit-Position: refs/heads/master@{#323378}