Remove GrRenderTarget member variable from SkGpuDevice

src/gpu/GrDrawContextPriv.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrDrawContextPriv_DEFINED
 #define GrDrawContextPriv_DEFINED
 
@@ skipping 37 matching lines @@
                             const SkRect&);
 
     bool drawAndStencilPath(const GrFixedClip&,
                             const GrUserStencilSettings*,
                             SkRegion::Op op,
                             bool invert,
                             bool doAA,
                             const SkMatrix& viewMatrix,
                             const SkPath&);
 
+    SkBudgeted isBudgeted() const;
+
     void testingOnly_drawBatch(const GrPaint&,
                                GrDrawBatch* batch,
                                const GrUserStencilSettings* = nullptr,
                                bool snapToCenters = false);
 
 private:
     explicit GrDrawContextPriv(GrDrawContext* drawContext) : fDrawContext(drawContext) {}
     GrDrawContextPriv(const GrRenderTargetPriv&) {} // unimpl
     GrDrawContextPriv& operator=(const GrRenderTargetPriv&); // unimpl
 
     // No taking addresses of this type.
     const GrDrawContextPriv* operator&() const;
     GrDrawContextPriv* operator&();
 
     GrDrawContext* fDrawContext;
 
     friend class GrDrawContext; // to construct/copy this type.
 };
 
 inline GrDrawContextPriv GrDrawContext::drawContextPriv() { return GrDrawContextPriv(this); }
 
 inline const GrDrawContextPriv GrDrawContext::drawContextPriv () const {
     return GrDrawContextPriv(const_cast<GrDrawContext*>(this));
 }
 
 #endif