Add more specialized fragment builders

src/gpu/effects/GrBitmapTextGeoProc.cpp

Index: src/gpu/effects/GrBitmapTextGeoProc.cpp
diff --git a/src/gpu/effects/GrBitmapTextGeoProc.cpp b/src/gpu/effects/GrBitmapTextGeoProc.cpp
index 6fd353849e18c9d2822cdaa6c846eb75520b8cfb..263676d353aee72e054bad65cbbca632f42eaaa0 100644
--- a/src/gpu/effects/GrBitmapTextGeoProc.cpp
+++ b/src/gpu/effects/GrBitmapTextGeoProc.cpp
@@ -43,7 +43,7 @@ public:
                                  GR_SIGNIFICANT_POW2_DECIMAL_DIG, recipHeight,
                                  cte.inTextureCoords()->fName);
 
-        GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
+        GrGLSLPPFragmentBuilder* fragBuilder = args.fFragBuilder;
         // Setup pass through color
         if (!cte.colorIgnored()) {
             if (cte.hasVertexColor()) {