Don't take a ref on GP in AutoEffectRestore.

include/gpu/GrProgramElement.h

Index: include/gpu/GrProgramElement.h
diff --git a/include/gpu/GrProgramElement.h b/include/gpu/GrProgramElement.h
index 6fdc98daa9be963db13a24872a60dbfa85219f98..5f88a2a68f79896cf1880692c8f0659c8d702bd6 100644
--- a/include/gpu/GrProgramElement.h
+++ b/include/gpu/GrProgramElement.h
@@ -49,6 +49,11 @@ public:
         }
     }
 
+    /**
+     * Gets an id that is unique for this GrProgramElement object. This will never return 0.
+     */
+    uint32_t getUniqueID() const { return fUniqueID; }
+
     void validate() const {
 #ifdef SK_DEBUG
         SkASSERT(fRefCnt >= 0);
@@ -58,7 +63,7 @@ public:
     }
 
 protected:
-    GrProgramElement() : fRefCnt(1), fPendingExecutions(0) {}
+    GrProgramElement() : fRefCnt(1), fPendingExecutions(0), fUniqueID(CreateUniqueID()) {}
 
     /** Subclasses registers their resources using this function. It is assumed the GrProgramResouce
         is and will remain owned by the subclass and this function will retain a raw ptr. Once a
@@ -69,6 +74,8 @@ protected:
     }
 
 private:
+    static uint32_t CreateUniqueID();
+
     void convertRefToPendingExecution() const;
 
     void completedExecution() const;
@@ -76,6 +83,7 @@ private:
     mutable int32_t fRefCnt;
     // Count of deferred executions not yet issued to the 3D API.
     mutable int32_t fPendingExecutions;
+    uint32_t        fUniqueID;
 
     SkSTArray<4, const GrProgramResource*, true> fProgramResources;