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

include/gpu/GrTypes.h

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrTypes_DEFINED
 #define GrTypes_DEFINED
@@ skipping 456 matching lines @@
 enum GrClipType {
     kRect_ClipType,
     kPath_ClipType
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 // opaque type for 3D API object handles
 typedef intptr_t GrBackendObject;
 
+
+/** Ownership rules for external GPU resources imported into Skia. */
+enum GrWrapOwnership {
+    /** Skia will assume the client will keep the resource alive and Skia will not free it. */
+    kBorrow_GrWrapOwnership,
+
+    /** Skia will assume ownership of the resource and free it. */
+    kAdopt_GrWrapOwnership,
+};
+
 /**
  * Gr can wrap an existing texture created by the client with a GrTexture
  * object. The client is responsible for ensuring that the texture lives at
  * least as long as the GrTexture object wrapping it. We require the client to
  * explicitly provide information about the texture, such as width, height,
  * and pixel config, rather than querying the 3D APIfor these values. We expect
  * these to be immutable even if the 3D API doesn't require this (OpenGL).
  *
  * Textures that are also render targets are supported as well. Gr will manage
  * any ancillary 3D API (stencil buffer, FBO id, etc) objects necessary for
@@ skipping 123 matching lines @@
             return 4 * width * height;
     }
 }
 
 /**
  * This value translates to reseting all the context state for any backend.
  */
 static const uint32_t kAll_GrBackendState = 0xffffffff;
 
 #endif