Add method to GrProgramResource to record that pending a execution was completed.

include/gpu/GrProgramElement.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrProgramElement_DEFINED
 #define GrProgramElement_DEFINED
 
@@ skipping 53 matching lines @@
         is and will remain owned by the subclass and this function will retain a raw ptr. Once a
         GrProgramResource is registered its setResource must not be called.
      */
     void addProgramResource(const GrProgramResource* res) {
         fProgramResources.push_back(res);
     }
 
 private:
     void convertRefToPendingExecution() const;
 
-    void completedExecution() const {
-        this->validate();
-        --fPendingExecutions;
-        if (0 == fRefCnt && 0 == fPendingExecutions) {
-            SkDELETE(this);
-        }
-    }
+    void completedExecution() const;
 
     mutable int32_t fRefCnt;
     // Count of deferred executions not yet issued to the 3D API.
     mutable int32_t fPendingExecutions;
 
     SkSTArray<4, const GrProgramResource*, true> fProgramResources;
 
     // Only this class can access convertRefToPendingExecution() and completedExecution().
     template <typename T> friend class GrProgramElementRef;
 
     typedef SkNoncopyable INHERITED;
 };
 
 #endif