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

include/core/SkImage.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkImage_DEFINED
 #define SkImage_DEFINED
 
@@ skipping 56 matching lines @@
     /**
      *  Create a new image from the specified descriptor. Note - the caller is responsible for
      *  managing the lifetime of the underlying platform texture.
      *
      *  Will return NULL if the specified descriptor is unsupported.
      */
     static SkImage* NewFromTexture(GrContext*, const GrBackendTextureDesc&,
                                    SkAlphaType = kPremul_SkAlphaType);
 
     /**
+     *  Create a new image from the specified descriptor. Note - Skia will delete or recycle the
+     *  texture when the image is released.
+     *
+     *  Will return NULL if the specified descriptor is unsupported.
+     */
+    static SkImage* NewFromAdoptedTexture(GrContext*, const GrBackendTextureDesc&,
+                                          SkAlphaType = kPremul_SkAlphaType);
+
+    /**
      *  Create a new image by copying the pixels from the specified descriptor. No reference is
      *  kept to the original platform texture.
      *
      *  Will return NULL if the specified descriptor is unsupported.
      */
     static SkImage* NewFromTextureCopy(GrContext*, const GrBackendTextureDesc&,
                                        SkAlphaType = kPremul_SkAlphaType);
 
     /**
      *  Create a new image by copying the pixels from the specified y, u, v textures. The data
@@ skipping 117 matching lines @@
     const int       fWidth;
     const int       fHeight;
     const uint32_t  fUniqueID;
 
     static uint32_t NextUniqueID();
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif