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

src/gpu/GrPipelineBuilder.h

Index: src/gpu/GrPipelineBuilder.h
diff --git a/src/gpu/GrPipelineBuilder.h b/src/gpu/GrPipelineBuilder.h
index fa085f0b993153bec51753f3edab933a3c4b6155..0e6f7175c780a305a690d2f289a632884179c722 100644
--- a/src/gpu/GrPipelineBuilder.h
+++ b/src/gpu/GrPipelineBuilder.h
@@ -177,10 +177,10 @@ public:
     }
 
     /**
-     * Checks whether the xp will need a copy of the destination to correctly blend.
+     * Checks whether the xp will need destination in a texture to correctly blend.
      */
-    bool willXPNeedDstCopy(const GrDrawTargetCaps& caps, const GrProcOptInfo& colorPOI,
-                           const GrProcOptInfo& coveragePOI) const;
+    bool willXPNeedDstTexture(const GrDrawTargetCaps& caps, const GrProcOptInfo& colorPOI,
+                              const GrProcOptInfo& coveragePOI) const;
 
     /// @}