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

src/gpu/gl/GrGLStencilAttachment.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLStencilAttachment.h"
 #include "GrGLGpu.h"
 
 size_t GrGLStencilAttachment::onGpuMemorySize() const {
     uint64_t size = this->width();
     size *= this->height();
     size *= fFormat.fTotalBits;
     size *= SkTMax(1,this->numSamples());
     return static_cast<size_t>(size / 8);
 }
 
 void GrGLStencilAttachment::onRelease() {
-    if (0 != fRenderbufferID && !this->isWrapped()) {
+    if (0 != fRenderbufferID && this->shouldFreeResources()) {
         GrGLGpu* gpuGL = (GrGLGpu*) this->getGpu();
         const GrGLInterface* gl = gpuGL->glInterface();
         GR_GL_CALL(gl, DeleteRenderbuffers(1, &fRenderbufferID));
         fRenderbufferID = 0;
     }
 
     INHERITED::onRelease();
 }
 
 void GrGLStencilAttachment::onAbandon() {
     fRenderbufferID = 0;
 
     INHERITED::onAbandon();
 }