Add getFloat/setFloat funcs to SkMatrix44

Add getFloat/setFloat funcs to SkMatrix44

These match the existing getDouble/setDouble functions.

Committed: http://code.google.com/p/skia/source/detail?r=11355

[enne (OOO), 2013-09-10 22:02:09]

This came up as a part of https://codereview.chromium.org/23043011/, and it
seemed convenient to add symmetric helpers for the floating point versions.

[tomhudson, 2013-09-11 11:19:15]

It's fine with me, and I've been following 23043011 with interest, but as an
external API change it needs Mike's imprimatur.

[reed1, 2013-09-11 14:27:12]

lgtm

[commit-bot: I haz the power, 2013-09-11 16:45:56]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/enne@chromium.org/23757031/1

[commit-bot: I haz the power, 2013-09-11 16:50:28]

Retried try job too often on Build-Ubuntu12-GCC-x86_64-Release-Trybot for
step(s) BuildBench, BuildEverything, BuildGm, BuildSkiaLib, BuildTests,
BuildTools
http://173.255.115.253:10117/buildstatus?builder=Build-Ubuntu12-GCC-x86_64-Re...

[enne (OOO), 2013-09-11 18:28:33]

On 2013/09/11 16:50:28, I haz the power (commit-bot) wrote:
> Retried try job too often on Build-Ubuntu12-GCC-x86_64-Release-Trybot for
> step(s) BuildBench, BuildEverything, BuildGm, BuildSkiaLib, BuildTests,
> BuildTools
>
http://173.255.115.253:10117/buildstatus?builder=Build-Ubuntu12-GCC-x86_64-Re...

Is the commit checkbox supposed to work? If no, could one of y'all commit this
for me as I am not a committer?

[reed1, 2013-09-11 19:03:57]

On 2013/09/11 18:28:33, enne wrote:
> On 2013/09/11 16:50:28, I haz the power (commit-bot) wrote:
> > Retried try job too often on Build-Ubuntu12-GCC-x86_64-Release-Trybot for
> > step(s) BuildBench, BuildEverything, BuildGm, BuildSkiaLib, BuildTests,
> > BuildTools
> >
>
http://173.255.115.253:10117/buildstatus?builder=Build-Ubuntu12-GCC-x86_64-Re...
> 
> Is the commit checkbox supposed to work? If no, could one of y'all commit this
> for me as I am not a committer?

Our tree has been red a long time, and according to Eric, this can cause CQ
entries to give up. I think we just need to try again tomorrow (as the tree is
still-red right now).

[commit-bot: I haz the power, 2013-09-13 16:27:30]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/enne@chromium.org/23757031/1

[commit-bot: I haz the power, 2013-09-18 18:52:12]

Change committed as 11355