Add processor name to comment when printing out shaders.

include/gpu/GrProcessorStage.h

Index: include/gpu/GrProcessorStage.h
diff --git a/include/gpu/GrProcessorStage.h b/include/gpu/GrProcessorStage.h
index 6f8496db06d7e60fc7820047e1ed0a9622318dee..0f24a30a32abb9cb4eb38666cdc9330f2a553111 100644
--- a/include/gpu/GrProcessorStage.h
+++ b/include/gpu/GrProcessorStage.h
@@ -146,6 +146,8 @@ public:
         }
     }
 
+    const char* name() const { return fProc->name(); }
+
     const GrFragmentProcessor* getProcessor() const { return fProc.get(); }
 
     void convertToPendingExec() { fProc.convertToPendingExec(); }