Don't take a ref on GP in AutoEffectRestore.

include/gpu/GrGpuResource.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 GrGpuResource_DEFINED
 #define GrGpuResource_DEFINED
 
@@ skipping 154 matching lines @@
     void setCacheEntry(GrResourceCacheEntry* cacheEntry) { fCacheEntry = cacheEntry; }
     GrResourceCacheEntry* getCacheEntry() { return fCacheEntry; }
 
     /** 
      * If this resource can be used as a scratch resource this returns a valid
      * scratch key. Otherwise it returns a key for which isNullScratch is true.
      */
     const GrResourceKey& getScratchKey() const { return fScratchKey; }
 
     /**
-     * Gets an id that is unique for this GrCacheable object. It is static in that it does
-     * not change when the content of the GrCacheable object changes. This will never return
+     * Gets an id that is unique for this GrGpuResource object. It is static in that it does
+     * not change when the content of the GrGpuResource object changes. This will never return
      * 0.
      */
     uint32_t getUniqueID() const { return fUniqueID; }
 
 protected:
     // This must be called by every GrGpuObject. It should be called once the object is fully
     // initialized (i.e. not in a base class constructor).
     void registerWithCache();
 
     GrGpuResource(GrGpu*, bool isWrapped);
@@ skipping 51 matching lines @@
 
     GrResourceCacheEntry*   fCacheEntry;  // NULL if not in cache
     const uint32_t          fUniqueID;
 
     GrResourceKey           fScratchKey;
 
     typedef GrGpuRef INHERITED;
 };
 
 #endif