Revert of Define SK_PICTURE_CLONE_NOOP.

Revert of Define SK_PICTURE_CLONE_NOOP. (https://codereview.chromium.org/445373003/)

Reason for revert:
This looks like the most likely culprit for the crash in http://build.chromium.org/p/chromium.linux/builders/Linux%20Tests%20%28dbg%29%281%29/builds/32814.

Partial stack dump:
	[16752:16752:0807/140640:WARNING:password_store_factory.cc(215)] Using basic (unencrypted) store for password storage. See http://code.google.com/p/chromium/wiki/LinuxPasswordStorage for more information about password storage options.
	[16783:16783:0807/140640:ERROR:sandbox_linux.cc(304)] InitializeSandbox() called with multiple threads in process gpu-process
	[16783:16783:0807/140640:WARNING:x11_util.cc(1408)] X error received: serial 61, error_code 8 (BadMatch (invalid parameter attributes)), request_code 72, minor_code 0 (X_PutImage)
	ASSERTION FAILED: info.fAlphaType == m_imageInfo.fAlphaType
	../../third_party/WebKit/Source/platform/graphics/DecodingImageGenerator.cpp(78) : virtual bool blink::DecodingImageGenerator::onGetPixels(const SkImageInfo &, void *, size_t, SkPMColor *, int *)
	1   0x7f11fbdbcdd8
	2   0x7f11fb0ea18c SkImageGenerator::getPixels(SkImageInfo const&, void*, unsigned long, unsigned int*, int*)
	3   0x7f11fb0bc349
	4   0x7f11fb13e30b SkPixelRef::lockPixels(SkPixelRef::LockRec*)
	5   0x7f11fb13e479 SkPixelRef::lockPixels()
	6   0x7f11fb04a6ea SkBitmap::lockPixels() const
	7   0x7f11fb05032d
	8   0x7f11fb0c35ca
	9   0x7f11fb051f51 SkBitmapDevice::drawBitmap(SkDraw const&, SkBitmap const&, SkMatrix const&, SkPaint const&)
	10  0x7f11fb05223b SkBitmapDevice::drawBitmapRect(SkDraw const&, SkBitmap const&, SkRect const*, SkRect const&, SkPaint const&, SkCanvas::DrawBitmapRectFlags)
	11  0x7f11fb0a3d4a SkCanvas::internalDrawBitmapRect(SkBitmap const&, SkRect const*, SkRect const&, SkPaint const*, SkCanvas::DrawBitmapRectFlags)
	12  0x7f11fb0a3de1 SkCanvas::drawBitmapRectToRect(SkBitmap const&, SkRect const*, SkRect const&, SkPaint const*, SkCanvas::DrawBitmapRectFlags)
	13  0x7f11fb12c296
	14  0x7f11fb12b9e1
	15  0x7f11fb12241f SkPicture::draw(SkCanvas*, SkDrawPictureCallback*) const
	16  0x7f11fc67a2a7 cc::Picture::Raster(SkCanvas*, SkDrawPictureCallback*, cc::Region const&, float)
	17  0x7f11fc6adc59 cc::PicturePileImpl::RasterCommon(SkCanvas*, SkDrawPictureCallback*, gfx::Rect const&, float, cc::RenderingStatsInstrumentation*, bool)
	18  0x7f11fc6ae45e cc::PicturePileImpl::RasterToBitmap(SkCanvas*, gfx::Rect const&, float, cc::RenderingStatsInstrumentation*)

Original issue's description:
> Define SK_PICTURE_CLONE_NOOP.
> 
> This makes SkPicture::clone() a cheap ref, meaning impl-side painting will render
> tiles concurrently from the same source SkPicture rather than from clones.
> 
> After testing for a few months in Skia, we believe SkPicture is thread safe enough
> to try this out on the Chrome bots.  Please revert this at the slightest sign of
> crash, flaky drawing, etc.
> 
> CQ_EXTRA_TRYBOTS=tryserver.chromium.linux:linux_layout_rel
> 
> BUG=
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=288096

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

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=288190

[Albert Bodenhamer, 2014-08-07 21:25:12]

Created Revert of Define SK_PICTURE_CLONE_NOOP.

[mtklein, 2014-08-07 21:27:56]

On 2014/08/07 21:25:12, Albert Bodenhamer wrote:
> Created Revert of Define SK_PICTURE_CLONE_NOOP.

Agreed it's the most likely culprit.  I'll make sure this is passing before
trying to land again.  Please let me know if reverting doesn't fix the test?

(Sorry if you got this message twice.)

[commit-bot: I haz the power, 2014-08-07 21:41:25]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/abodenha@chromium.org/455463002/1

[commit-bot: I haz the power, 2014-08-08 01:10:57]

Change committed as 288190

[mtklein, 2014-08-08 02:16:20]

On 2014/08/08 01:10:57, I haz the power (commit-bot) wrote:
> Change committed as 288190

I'm going to try relanding the original CL.  Looking at the build logs, this
must be a flaky test:

32814  - build with original CL, failed
32815  - subsequent build, passed
32816  - another build, passed
32817  - build with revert, still running

http://build.chromium.org/p/chromium.linux/builders/Linux%20Tests%20%28dbg%29...