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

src/effects/SkArithmeticMode_gpu.cpp

Index: src/effects/SkArithmeticMode_gpu.cpp
diff --git a/src/effects/SkArithmeticMode_gpu.cpp b/src/effects/SkArithmeticMode_gpu.cpp
index 3b815e5210a99631d3a7024517e261b60e004cca..ae0839710c83fd7aa5a803adc3c70cc9fe68fc4b 100644
--- a/src/effects/SkArithmeticMode_gpu.cpp
+++ b/src/effects/SkArithmeticMode_gpu.cpp
@@ -161,8 +161,9 @@
 class ArithmeticXP : public GrXferProcessor {
 public:
     static GrXferProcessor* Create(float k1, float k2, float k3, float k4, bool enforcePMColor,
-                                   const DstTexture* dstTexture, bool willReadDstColor) {
-        return SkNEW_ARGS(ArithmeticXP, (k1, k2, k3, k4, enforcePMColor, dstTexture,
+                                   const GrDeviceCoordTexture* dstCopy,
+                                   bool willReadDstColor) {
+        return SkNEW_ARGS(ArithmeticXP, (k1, k2, k3, k4, enforcePMColor, dstCopy,
                                          willReadDstColor));
     }
 
@@ -182,7 +183,7 @@
 
 private:
     ArithmeticXP(float k1, float k2, float k3, float k4, bool enforcePMColor,
-                   const DstTexture*, bool willReadDstColor);
+                   const GrDeviceCoordTexture* dstCopy, bool willReadDstColor);
 
     GrXferProcessor::OptFlags onGetOptimizations(const GrProcOptInfo& colorPOI,
                                                  const GrProcOptInfo& coveragePOI,
@@ -262,8 +263,8 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 ArithmeticXP::ArithmeticXP(float k1, float k2, float k3, float k4, bool enforcePMColor,
-                           const DstTexture* dstTexture, bool willReadDstColor)
-    : INHERITED(dstTexture, willReadDstColor)
+                           const GrDeviceCoordTexture* dstCopy, bool willReadDstColor)
+    : INHERITED(dstCopy, willReadDstColor)
     , fK1(k1)
     , fK2(k2)
     , fK3(k3)
@@ -300,8 +301,8 @@
 GrArithmeticXPFactory::onCreateXferProcessor(const GrCaps& caps,
                                              const GrProcOptInfo& colorPOI,
                                              const GrProcOptInfo& coveragePOI,
-                                             const DstTexture* dstTexture) const {
-    return ArithmeticXP::Create(fK1, fK2, fK3, fK4, fEnforcePMColor, dstTexture,
+                                             const GrDeviceCoordTexture* dstCopy) const {
+    return ArithmeticXP::Create(fK1, fK2, fK3, fK4, fEnforcePMColor, dstCopy,
                                 this->willReadDstColor(caps, colorPOI, coveragePOI));
 }