Revert of Move DstCoordTexture to GrXP, rename and remove the word "copy" from dstcopytexture names.

Revert of Move DstCoordTexture to GrXP, rename and remove the word "copy" from dstcopytexture names. (patchset #6 id:100001 of https://codereview.chromium.org/1132093004/)

Reason for revert:
This is asserting on GTX660 bots with '!dst'. This may just be catching an existing issue.

https://build.chromium.org/p/client.skia/builders/Test-Ubuntu-GCC-ShuttleA-GPU-GTX660-x86_64-Debug/builds/622/steps/dm/logs/stdio

https://build.chromium.org/p/client.skia/builders/Test-Win7-MSVC-ShuttleA-GPU-HD2000-x86-Debug-ANGLE/builds/209/steps/dm/logs/stdio

https://build.chromium.org/p/client.skia/builders/Test-Win8-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug/builds/318/steps/dm/logs/stdio



Original issue's description:
> Move DstCoordTexture to GrXP, rename and remove the word "copy" from dstcopytexture names.
> 
> Committed: https://skia.googlesource.com/skia/+/bb106b5f6ee18f7453b63f3a95f421b60a957f39

TBR=egdaniel@google.com,bsalomon@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://skia.googlesource.com/skia/+/d23a395d519835f78630aaea3f2a2c30ecdffe87

[bungeman-skia, 2015-05-22 22:22:14]

Created Revert of Move DstCoordTexture to GrXP, rename and remove the word
"copy" from dstcopytexture names.

[commit-bot: I haz the power, 2015-05-22 22:22:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1158453004/1

[commit-bot: I haz the power, 2015-05-22 22:22:55]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/d23a395d519835f78630aaea3f2a2c30ecdffe87