Revert of Remove calls to deprecated SkPDFDevice and SkPDFDocuemnt.

Revert of Remove calls to deprecated SkPDFDevice and SkPDFDocuemnt. (patchset #4 id:370001 of https://codereview.chromium.org/694213002/)

Reason for revert:
Breaks printing.
BUG=434079
Original issue's description:
> Remove calls to deprecated SkPDFDevice and SkPDFDocuemnt.
>
> In the PdfMetafileSkia class, Instead of storing a
> SkPDFDocument, store a vector of pages as
> SkPictures.  This allows access to individual at any
> time.  When FinishDocument() is called, use the
> SkDocument API to print all pages to PDF.
>
> BUG=278148
>
> Committed: https://crrev.com/816b7105b078f7300f825cd81f379e312efdb821
> Cr-Commit-Position: refs/heads/master@{#304379}

TBR=robertphillips@google.com,reed@google.com,halcanary@google.com
BUG=278148
Committed: https://crrev.com/d054bfdd5eb4a364d1aa7dbf139018d3b9b885b3
Cr-Commit-Position: refs/heads/master@{#304536}

[Vitaly Buka (NO REVIEWS), 2014-11-17 23:41:34]

Created Revert of Remove calls to deprecated SkPDFDevice and SkPDFDocuemnt.

[Vitaly Buka (NO REVIEWS), 2014-11-17 23:41:41]

The CQ bit was unchecked by vitalybuka@chromium.org

[Vitaly Buka (NO REVIEWS), 2014-11-17 23:41:57]

The CQ bit was checked by vitalybuka@chromium.org

[commit-bot: I haz the power, 2014-11-17 23:42:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/731143004/1

[commit-bot: I haz the power, 2014-11-18 01:26:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-18 01:26:54]

Patchset 1 (id:??) landed as
https://crrev.com/d054bfdd5eb4a364d1aa7dbf139018d3b9b885b3
Cr-Commit-Position: refs/heads/master@{#304536}