Fix memory leak in ClipMaskManager

src/gpu/GrClipMaskManager.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 "GrClipMaskManager.h"
 #include "GrCaps.h"
 #include "GrDrawContext.h"
@@ skipping 290 matching lines @@
                 !SkRect::Make(scissorSpaceIBounds).contains(*devBounds)) {
                 scissorState->set(scissorSpaceIBounds);
             }
             this->setPipelineBuilderStencil(pipelineBuilder, ars);
             return true;
         }
     }
 
     // If MSAA is enabled we can do everything in the stencil buffer.
     if (0 == rt->numStencilSamples() && requiresAA) {
-        GrTexture* result = nullptr;
+        SkAutoTUnref<GrTexture> result;
 
         // The top-left of the mask corresponds to the top-left corner of the bounds.
         SkVector clipToMaskOffset = {
             SkIntToScalar(-clipSpaceIBounds.fLeft),
             SkIntToScalar(-clipSpaceIBounds.fTop)
         };
 
         if (this->useSWOnlyPath(pipelineBuilder, clipToMaskOffset, elements)) {
             // The clip geometry is complex enough that it will be more efficient to create it
             // entirely in software
-            result = this->createSoftwareClipMask(genID,
-                                                  initialState,
-                                                  elements,
-                                                  clipToMaskOffset,
-                                                  clipSpaceIBounds);
+            result.reset(this->createSoftwareClipMask(genID,
+                                                      initialState,
+                                                      elements,
+                                                      clipToMaskOffset,
+                                                      clipSpaceIBounds));
         } else {
-            result = this->createAlphaClipMask(genID,
-                                               initialState,
-                                               elements,
-                                               clipToMaskOffset,
-                                               clipSpaceIBounds);
+            result.reset(this->createAlphaClipMask(genID,
+                                                   initialState,
+                                                   elements,
+                                                   clipToMaskOffset,
+                                                   clipSpaceIBounds));
         }
 
         if (result) {
             arfps->set(&pipelineBuilder);
             // The mask's top left coord should be pinned to the rounded-out top left corner of
             // clipSpace bounds. We determine the mask's position WRT to the render target here.
             SkIRect rtSpaceMaskBounds = clipSpaceIBounds;
             rtSpaceMaskBounds.offset(-clip.origin());
             setup_drawstate_aaclip(pipelineBuilder, result, arfps, rtSpaceMaskBounds);
             this->setPipelineBuilderStencil(pipelineBuilder, ars);
@@ skipping 791 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 
 void GrClipMaskManager::adjustPathStencilParams(const GrStencilAttachment* stencilAttachment,
                                                 GrStencilSettings* settings) {
     if (stencilAttachment) {
         int stencilBits = stencilAttachment->bits();
         this->adjustStencilParams(settings, fClipMode, stencilBits);
     }
 }