Make GrResourceCache2 responsible for calling release, abandon, and ~.

src/gpu/GrGpuResourceCacheAccess.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 GrGpuResourceCacheAccess_DEFINED
 #define GrGpuResourceCacheAccess_DEFINED
@@ skipping 36 matching lines @@
     /**
      * If the resource is currently cached by a content key, the key is returned, otherwise NULL.
      */
     const GrResourceKey* getContentKey() const {
         if (fResource->fContentKeySet) {
             return &fResource->fContentKey;
         }
         return NULL;
     }
 
+    /**
+     * Called by the cache to delete the resource under normal circumstances.
+     */
+    void release() {
+        fResource->release();
+        if (fResource->isPurgable()) {            
+            SkDELETE(fResource);
+        }
+    }
+
+    /**
+     * Called by the cache to delete the resource when the backend 3D context is no longer valid.
+     */
+    void abandon() {
+        fResource->abandon();
+        if (fResource->isPurgable()) {            
+            SkDELETE(fResource);
+        }
+    }
+
 private:
     CacheAccess(GrGpuResource* resource) : fResource(resource) { }
     CacheAccess(const CacheAccess& that) : fResource(that.fResource) { }
     CacheAccess& operator=(const CacheAccess&); // unimpl
 
     // No taking addresses of this type.
     const CacheAccess* operator&() const;
     CacheAccess* operator&();
 
     GrGpuResource* fResource;
 
     friend class GrGpuResource; // to construct/copy this type.
 };
 
 inline GrGpuResource::CacheAccess GrGpuResource::cacheAccess() { return CacheAccess(this); }
 
 inline const GrGpuResource::CacheAccess GrGpuResource::cacheAccess() const {
     return CacheAccess(const_cast<GrGpuResource*>(this));
 }
 
 #endif