Revert of Remove GrStagedProcessor, remove the word Stage as it applies to FPs

src/gpu/gl/builders/GrGLProgramBuilder.h

Index: src/gpu/gl/builders/GrGLProgramBuilder.h
diff --git a/src/gpu/gl/builders/GrGLProgramBuilder.h b/src/gpu/gl/builders/GrGLProgramBuilder.h
index 06d0fa074496adf63f70f7dbea7c58f4e23fc73e..bdd96d212e768dd8fdd48dd4f4b9ab0596b6815e 100644
--- a/src/gpu/gl/builders/GrGLProgramBuilder.h
+++ b/src/gpu/gl/builders/GrGLProgramBuilder.h
@@ -16,9 +16,8 @@
 #include "../GrGLUniformHandle.h"
 #include "../GrGLPrimitiveProcessor.h"
 #include "../GrGLXferProcessor.h"
+#include "../../GrPendingFragmentStage.h"
 #include "../../GrPipeline.h"
-
-class GrFragmentProcessor;
 
 // Enough precision to represent 1 / 2048 accurately in printf
 #define GR_SIGNIFICANT_POW2_DECIMAL_DIG 11
@@ -302,7 +301,7 @@
     void nameExpression(GrGLSLExpr4*, const char* baseName);
     bool emitAndInstallProcs(GrGLSLExpr4* inputColor, GrGLSLExpr4* inputCoverage);
     void emitAndInstallFragProcs(int procOffset, int numProcs, GrGLSLExpr4* inOut);
-    void emitAndInstallProc(const GrFragmentProcessor&,
+    void emitAndInstallProc(const GrPendingFragmentStage&,
                             int index,
                             const GrGLSLExpr4& input,
                             GrGLSLExpr4* output);
@@ -312,7 +311,7 @@
                             GrGLSLExpr4* outputCoverage);
 
     // these emit functions help to keep the createAndEmitProcessors template general
-    void emitAndInstallProc(const GrFragmentProcessor&,
+    void emitAndInstallProc(const GrPendingFragmentStage&,
                             int index,
                             const char* outColor,
                             const char* inColor);