Revert of Sketch splitting SkPicture into an interface and SkBigPicture.

Revert of Sketch splitting SkPicture into an interface and SkBigPicture. (patchset #25 id:480001 of https://codereview.chromium.org/1112523006/)

Reason for revert:
win_chromium_compile_dbg_ng

FAILED: ninja -t msvc -e environment.x86 -- E:\b\build\goma/gomacc "E:\b\depot_tools\win_toolchain\vs2013_files\VC\bin\amd64_x86\cl.exe" /nologo /showIncludes /FC @obj\third_party\skia\src\core\skia.SkBitmapHeap.obj.rsp /c ..\..\third_party\skia\src\core\SkBitmapHeap.cpp /Foobj\third_party\skia\src\core\skia.SkBitmapHeap.obj /Fdobj\skia\skia.cc.pdb 
e:\b\build\slave\win\build\src\third_party\skia\include\core\skpicture.h(176) : error C2487: 'CURRENT_PICTURE_VERSION' : member of dll interface class may not be declared with dll interface


Original issue's description:
> Sketch splitting SkPicture into an interface and SkBigPicture.
> 
> Adds small pictures for drawRect(), drawTextBlob(), and drawPath().
> These cover about 89% of draw calls from Blink SKPs,
> and about 25% of draw calls from our GMs.
> 
> SkPicture handles:
>   - serialization and deserialization
>   - unique IDs
> 
> Everything else is left to the subclasses:
>   - playback(), cullRect()
>   - hasBitmap(), hasText(), suitableForGPU(), etc.
>   - LayerInfo / AccelData if applicable.
> 
> The time to record a 1-op picture improves a good chunk
> (2 mallocs to 1), and the time to record a 0-op picture 
> greatly improves (2 mallocs to none):
> 
>     picture_overhead_draw:   450ns -> 350ns
>     picture_overhead_nodraw: 300ns -> 90ns
> 
> BUG=skia:
> 
> Committed: https://skia.googlesource.com/skia/+/c92c129ff85b05a714bd1bf921c02d5e14651f8b
> 
> Latest blink_linux_rel:
> 
> http://build.chromium.org/p/tryserver.blink/builders/linux_blink_rel/builds/61248
> 
> Committed: https://skia.googlesource.com/skia/+/15877b6eae33a9282458bdb904a6d00440eca0ec

TBR=reed@google.com,robertphillips@google.com,fmalita@chromium.org,mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Committed: https://skia.googlesource.com/skia/+/72743b165424efc4ef6f6614add9033ea1ef31db

[mtklein, 2015-05-18 21:53:07]

Created Revert of Sketch splitting SkPicture into an interface and SkBigPicture.

[commit-bot: I haz the power, 2015-05-18 21:53:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1130283004/1

[commit-bot: I haz the power, 2015-05-18 21:53:48]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/72743b165424efc4ef6f6614add9033ea1ef31db