Revert of Revert "Serialization of SkPictureImageFilter"

Revert of Revert "Serialization of SkPictureImageFilter" (https://codereview.chromium.org/153583007/)

Reason for revert:
New SKPs with version20 are in Google Storage due to http://108.170.219.160:10117/builders/Housekeeper-Nightly-RecreateSKPs/builds/22

Original issue's description:
> Revert "Serialization of SkPictureImageFilter"
> 
> This reverts commit 227321b30106e57942929eb96fa5bc22544f6c9e.
> 
> Revert "Sanitizing source files in Housekeeper-Nightly"
> 
> This reverts commit baf28584b7636c01355f8d8d972e06aa7fb66d77.
> 
> TBR=robertphillips@google.com,sugoi@google.com
> 
> Committed: https://code.google.com/p/skia/source/detail?r=13356

TBR=robertphillips@google.com,sugoi@google.com,fmalita@google.com,fmalita@chromium.org
NOTREECHECKS=true
NOTRY=true

Committed: http://code.google.com/p/skia/source/detail?r=13357

[rmistry, 2014-02-07 12:19:51]

Created Revert of Revert "Serialization of SkPictureImageFilter"

[commit-bot: I haz the power, 2014-02-07 12:19:54]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/rmistry@google.com/143163005/1

[commit-bot: I haz the power, 2014-02-07 12:20:09]

Change committed as 13357

[tomhudson, 2014-02-11 12:14:40]

This CL is the only thing in the blamelist for a 4x regression of
tabl_frantzen:Perf-Win8-ShuttleA-GTX660-x86-Release:simple_viewport_1000x1000
(at
http://0.skia-gwt-dash.chrome-skia.ic.borg.google.com:26275/#b-52~c-718~r-15).

Some further poking around suggests it's a 4x regression on ALL architectures.
Filed https://code.google.com/p/skia/issues/detail?id=2159.

[sugoi, 2014-02-11 12:26:06]

On 2014/02/11 12:14:40, tomhudson wrote:
> This CL is the only thing in the blamelist for a 4x regression of
> tabl_frantzen:Perf-Win8-ShuttleA-GTX660-x86-Release:simple_viewport_1000x1000
> (at
>
http://0.skia-gwt-dash.chrome-skia.ic.borg.google.com:26275/#b-52%7Ec-718%7Er-15).
> 
> Some further poking around suggests it's a 4x regression on ALL architectures.
> Filed https://code.google.com/p/skia/issues/detail?id=2159.

Most of this cl's code is unused. The important part is that PICTURE_VERSION was
changed and that all SKPs were re-recorded. The new SKPs must be more complex /
contain more features than the previous ones (like having AA enabled, higher
resolution, etc). A first idea could be to compare version 19 SKPs and version
20 SKPs.