Revert of Mojo: Specify/check alignment of pointers more carefully.

Revert of Mojo: Specify/check alignment of pointers more carefully. (https://codereview.chromium.org/304303006/)

Reason for revert:
Broke the windows bots:
http://build.chromium.org/p/chromium.win/builders/Vista%20Tests%20%283%29/builds/40269
http://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%28dbg%29%284%29/builds/26580

Original issue's description:
> Mojo: Specify/check alignment of pointers more carefully.
> 
> Improve the verification routines especially in the case that no count
> is necessary.
> 
> Also add a test.
> 
> R=darin@chromium.org
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=273936

TBR=darin@chromium.org,viettrungluu@chromium.org
NOTREECHECKS=true
NOTRY=true

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=274062

[DaleCurtis, 2014-05-31 22:06:48]

Created Revert of Mojo: Specify/check alignment of pointers more carefully.

[commit-bot: I haz the power, 2014-05-31 22:07:34]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/dalecurtis@chromium.org/312463002/1

[commit-bot: I haz the power, 2014-05-31 22:09:02]

Change committed as 274062