Revert of 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 09b4f91e7304760e8b386c579bf8af1aeeb25ba7..447a981f3a854e5205ee14fa7d1c700c3fb346bb 100644
--- a/src/gpu/GrPipelineBuilder.h
+++ b/src/gpu/GrPipelineBuilder.h
@@ -177,10 +177,10 @@
     }
 
     /**
-     * Checks whether the xp will need destination in a texture to correctly blend.
-     */
-    bool willXPNeedDstTexture(const GrCaps& caps, const GrProcOptInfo& colorPOI,
-                              const GrProcOptInfo& coveragePOI) const;
+     * Checks whether the xp will need a copy of the destination to correctly blend.
+     */
+    bool willXPNeedDstCopy(const GrCaps& caps, const GrProcOptInfo& colorPOI,
+                           const GrProcOptInfo& coveragePOI) const;
 
     /// @}