Fix memory leak

include/gpu/GrDrawContext.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrDrawContext_DEFINED
 #define GrDrawContext_DEFINED
 
@@ skipping 292 matching lines @@
                           bool useAA,
                           const SkPath&,
                           const GrStrokeInfo&);
 
     // This entry point allows the GrTextContext-derived classes to add their batches to
     // the drawTarget.
     void drawBatch(GrPipelineBuilder* pipelineBuilder, GrDrawBatch* batch);
 
     GrDrawTarget* getDrawTarget();
 
-    GrDrawingManager*   fDrawingManager;
-    GrRenderTarget*     fRenderTarget;
+    GrDrawingManager*                 fDrawingManager;
+    GrRenderTarget*                   fRenderTarget;
 
     // In MDB-mode the drawTarget can be closed by some other drawContext that has picked
     // it up. For this reason, the drawTarget should only ever be accessed via 'getDrawTarget'.
-    GrDrawTarget*       fDrawTarget;
-    GrAtlasTextContext* fAtlasTextContext;
-    GrContext*          fContext;
+    GrDrawTarget*                     fDrawTarget;
+    SkAutoTDelete<GrAtlasTextContext> fAtlasTextContext;
+    GrContext*                        fContext;
 
-    SkSurfaceProps      fSurfaceProps;
-    GrAuditTrail*       fAuditTrail;
+    SkSurfaceProps                    fSurfaceProps;
+    GrAuditTrail*                     fAuditTrail;
 
     // In debug builds we guard against improper thread handling
     SkDEBUGCODE(mutable GrSingleOwner* fSingleOwner;)
 };
 
 #endif