Revert of Create xfer processor backend.

src/gpu/gl/GrGLProgramDesc.cpp

Index: src/gpu/gl/GrGLProgramDesc.cpp
diff --git a/src/gpu/gl/GrGLProgramDesc.cpp b/src/gpu/gl/GrGLProgramDesc.cpp
index 2476c5532cc3cd89cc14af1c7ccdf4e53ccc6112..068386c3aa94a5e761da2620714967de81b6d842 100644
--- a/src/gpu/gl/GrGLProgramDesc.cpp
+++ b/src/gpu/gl/GrGLProgramDesc.cpp
@@ -189,19 +189,11 @@
         const GrFragmentProcessor& fp = *fps.getProcessor();
         GrProcessorKeyBuilder b(&desc->fKey);
         fp.getGLProcessorKey(gpu->glCaps(), &b);
-        if (!get_meta_key(fp, gpu->glCaps(),
-                          gen_transform_key(fps, requiresLocalCoordAttrib), 0, &b)) {
+        if (!get_meta_key(*fps.getProcessor(), gpu->glCaps(),
+                         gen_transform_key(fps, requiresLocalCoordAttrib), 0, &b)) {
             desc->fKey.reset();
             return false;
         }
-    }
-
-    const GrXferProcessor& xp = *optState.getXferProcessor();
-    GrProcessorKeyBuilder b(&desc->fKey);
-    xp.getGLProcessorKey(gpu->glCaps(), &b);
-    if (!get_meta_key(xp, gpu->glCaps(), 0, 0, &b)) {
-        desc->fKey.reset();
-        return false;
     }
 
     // --------DO NOT MOVE HEADER ABOVE THIS LINE--------------------------------------------------
@@ -268,6 +260,9 @@
         header->fFragPosKey = 0;
     }
 
+    header->fPrimaryOutputType = descInfo.fPrimaryOutputType;
+    header->fSecondaryOutputType = descInfo.fSecondaryOutputType;
+
     header->fColorEffectCnt = optState.numColorStages();
     header->fCoverageEffectCnt = optState.numCoverageStages();
     desc->finalize();