Move ScopedPtrHashMap from cc to base

So that ScopedPtrHashMap can be used by user outside of cc.

BUG=156199
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=220488

[powei, 2013-08-28 00:29:33]

PTAL. Also, any preference over the directory?  base/, base/memory/, or
base/containers/?  Other concerns?  

Thanks very much.

[danakj, 2013-08-28 00:32:22]

This should go in base/containers/ like the other hash tables stuff.

[jam, 2013-08-28 15:49:36]

content/DEPS lgtm, but i'm not an owner in base so you'll need to get a reviewer
for that

https://codereview.chromium.org/23653002/diff/8001/content/DEPS
File content/DEPS (right):

https://codereview.chromium.org/23653002/diff/8001/content/DEPS#newcode21
content/DEPS:21: "!cc/base/thread_impl.h",  # http://crbug.com/249172
nit: please remove these two lines while at it since those files are now gone

[powei, 2013-08-28 16:02:09]

On 2013/08/28 15:49:36, jam wrote:
> content/DEPS lgtm, but i'm not an owner in base so you'll need to get a
reviewer
> for that
> 
> https://codereview.chromium.org/23653002/diff/8001/content/DEPS
> File content/DEPS (right):
> 
> https://codereview.chromium.org/23653002/diff/8001/content/DEPS#newcode21
> content/DEPS:21: "!cc/base/thread_impl.h",  # http://crbug.com/249172
> nit: please remove these two lines while at it since those files are now gone

Hi darin@, PTAL.  Thanks.

[danakj, 2013-08-28 17:30:02]

cc/ changes LGTM

[powei, 2013-08-28 22:25:50]

darin is probably busy.  Can you help take a look, thakis?

[Nico, 2013-08-28 23:04:25]

+brettw

(I think this makes sense, and if he doesn't reply, I'll stamp this as is in a
day, but I'm still testing the waters :-))

[brettw, 2013-08-29 21:10:04]

lgtm

seems OK

[powei, 2013-08-29 21:12:56]

On 2013/08/29 21:10:04, brettw wrote:
> lgtm
> 
> seems OK

Great!  Thanks everyone.

[commit-bot: I haz the power, 2013-08-29 21:16:38]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/powei@chromium.org/23653002/2

[commit-bot: I haz the power, 2013-08-30 02:41:34]

Change committed as 220488