Bring sk_sp to GrDrawContext

src/gpu/GrDrawingManager.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 GrDrawingManager_DEFINED
 #define GrDrawingManager_DEFINED
 
@@ skipping 13 matching lines @@
 //
 // In the future this class will allocate a new GrDrawContext for
 // each GrRenderTarget/GrDrawTarget and manage the DAG.
 class GrDrawingManager {
 public:
     ~GrDrawingManager();
 
     bool abandoned() const { return fAbandoned; }
     void freeGpuResources();
 
-    GrDrawContext* drawContext(GrRenderTarget* rt, const SkSurfaceProps*);
+    sk_sp<GrDrawContext> drawContext(sk_sp<GrRenderTarget> rt, const SkSurfaceProps*);
 
     // The caller automatically gets a ref on the returned drawTarget. It must
     // be balanced by an unref call.
     GrDrawTarget* newDrawTarget(GrRenderTarget* rt);
 
     GrContext* getContext() { return fContext; }
 
     GrPathRenderer* getPathRenderer(const GrPathRenderer::CanDrawPathArgs& args,
                                     bool allowSW,
                                     GrPathRendererChain::DrawType drawType,
@@ skipping 34 matching lines @@
     SkTDArray<GrDrawTarget*>    fDrawTargets;
 
     GrPathRendererChain*        fPathRendererChain;
     GrSoftwarePathRenderer*     fSoftwarePathRenderer;
 
     GrBatchFlushState           fFlushState;
     bool                        fFlushing;
 };
 
 #endif