Fix leak in SkImage_Gpu::onMakeSubset().

src/image/SkImage_Gpu.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkAutoPixmapStorage.h"
 #include "GrCaps.h"
 #include "GrContext.h"
@@ skipping 122 matching lines @@
     }
     return true;
 }
 
 sk_sp<SkImage> SkImage_Gpu::onMakeSubset(const SkIRect& subset) const {
     GrContext* ctx = fTexture->getContext();
     GrSurfaceDesc desc = fTexture->desc();
     desc.fWidth = subset.width();
     desc.fHeight = subset.height();
 
-    GrTexture* subTx = ctx->textureProvider()->createTexture(desc, fBudgeted);
+    sk_sp<GrTexture> subTx(ctx->textureProvider()->createTexture(desc, fBudgeted));
     if (!subTx) {
         return nullptr;
     }
-    ctx->copySurface(subTx, fTexture, subset, SkIPoint::Make(0, 0));
+    ctx->copySurface(subTx.get(), fTexture, subset, SkIPoint::Make(0, 0));
     return sk_make_sp<SkImage_Gpu>(desc.fWidth, desc.fHeight, kNeedNewImageUniqueID,
-                                   fAlphaType, subTx, fBudgeted);
+                                   fAlphaType, subTx.get(), fBudgeted);
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 static sk_sp<SkImage> new_wrapped_texture_common(GrContext* ctx, const GrBackendTextureDesc& desc,
                                                  SkAlphaType at, GrWrapOwnership ownership,
                                                  SkImage::TextureReleaseProc releaseProc,
                                                  SkImage::ReleaseContext releaseCtx) {
     if (desc.fWidth <= 0 || desc.fHeight <= 0) {
         return nullptr;
@@ skipping 289 matching lines @@
         return nullptr;
     }
 
     const SkIRect srcR = SkIRect::MakeWH(desc.fWidth, desc.fHeight);
     const SkIPoint dstP = SkIPoint::Make(0, 0);
     ctx->copySurface(dst, src, srcR, dstP);
     ctx->flushSurfaceWrites(dst);
     return dst;
 }