Always inline Filter_32_*_neon functions

Always inline Filter_32_*_neon functions

The functions are rather performance critical and already marked
'inline'. However, Chrome for Android will not have these functions
inlined due to it being compiled with -Os and a small -finline-limit.

This avoids one call in the filtering functions.

Does not increase the library size.

BUG=chromium:363073
Committed: http://code.google.com/p/skia/source/detail?r=14709

[mtklein, 2014-05-13 12:10:17]

Can you add a note in here somewhere to remind us why we force inlining?  E.g.

// Android uses -Os so we need to force these inline or we'll pay XX% extra
overhead from calls.

[Kimmo Kinnunen, 2014-05-13 12:25:37]

On 2014/05/13 12:10:17, mtklein wrote:
> Can you add a note in here somewhere to remind us why we force inlining?  E.g.
> 
> // Android uses -Os so we need to force these inline or we'll pay XX% extra
> overhead from calls.

Done.

[mtklein, 2014-05-13 12:28:26]

lgtm

[commit-bot: I haz the power, 2014-05-13 12:28:39]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/kkinnunen@nvidia.com/280403005/20001

[commit-bot: I haz the power, 2014-05-13 14:47:14]

Change committed as 14709