Revert of cc: Change TileManager iterators to be queues.

Revert of cc: Change TileManager iterators to be queues. (https://codereview.chromium.org/406543003/)

Reason for revert:
TileManagerTilePriorityQueueTest.EvictionTilePriorityQueueWithOcclusion consistently times out on Win7 bot
http://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%28dbg%29%281%29/builds/29899


Original issue's description:
> cc: Change TileManager iterators to be queues.
> 
> This patch is mostly just moving code around. It moves the iterators
> from tile manager to be in separate files, renames them to be queues.
> 
> It also adds a tile manager client interface for building the queues.
> 
> The rest is just fix ups for the tests.
> 
> R=reveman
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284506

TBR=reveman@chromium.org,vmpstr@chromium.org
NOTREECHECKS=true
NOTRY=true

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284604

[Kunihiko Sakamoto, 2014-07-22 02:34:42]

Created Revert of cc: Change TileManager iterators to be queues.

[commit-bot: I haz the power, 2014-07-22 02:36:16]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/ksakamoto@chromium.org/406183002/1

[commit-bot: I haz the power, 2014-07-22 02:44:48]

Change committed as 284604