Add support for creating texture backed images where Skia will delete the texture.

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 15 matching lines @@
      * key, and does not have a unique key.
      */
     bool isScratch() const {
         return !fResource->getUniqueKey().isValid() && fResource->fScratchKey.isValid() &&
                 fResource->resourcePriv().isBudgeted();
     }
 
     /**
      * Is the resource object wrapping an externally allocated GPU resource?
      */
-    bool isWrapped() const { return GrGpuResource::kWrapped_LifeCycle == fResource->fLifeCycle; }
+    bool isExternal() const { return fResource->isExternal(); }
+
+    /**
+     * Is the resource object wrapping an externally allocated GPU resource that Skia has not taken
+     * ownership of.
+     */
+    bool isBorrowed() const { return GrGpuResource::kBorrowed_LifeCycle == fResource->fLifeCycle; }
+
+    /**
+     * Is the resource object wrapping an externally allocated GPU resource that Skia has taken
+     * ownership of.
+     */
+    bool isAdopted() const { return GrGpuResource::kAdopted_LifeCycle == fResource->fLifeCycle; }
  
     /**
      * Called by the cache to delete the resource under normal circumstances.
      */
     void release() {
         fResource->release();
         if (fResource->isPurgeable()) {            
             SkDELETE(fResource);
         }
     }
@@ skipping 34 matching lines @@
     friend void test_unbudgeted_to_scratch(skiatest::Reporter* reporter); // for unit testing
 };
 
 inline GrGpuResource::CacheAccess GrGpuResource::cacheAccess() { return CacheAccess(this); }
 
 inline const GrGpuResource::CacheAccess GrGpuResource::cacheAccess() const {
     return CacheAccess(const_cast<GrGpuResource*>(this));
 }
 
 #endif