Define clear regions in terms of GrFixedClip

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
 
 #include "GrColor.h"
 #include "GrPaint.h"
 #include "GrRenderTarget.h"
 #include "SkRefCnt.h"
 #include "SkRegion.h"
 #include "SkSurfaceProps.h"
 #include "../private/GrInstancedPipelineInfo.h"
 #include "../private/GrSingleOwner.h"
 
 class GrAuditTrail;
 class GrClip;
 class GrContext;
 class GrDrawBatch;
 class GrDrawContextPriv;
 class GrDrawPathBatchBase;
 class GrDrawingManager;
 class GrDrawTarget;
+class GrFixedClip;
 class GrPaint;
 class GrPathProcessor;
 class GrPipelineBuilder;
 class GrRenderTarget;
 class GrStyle;
 class GrSurface;
 struct GrUserStencilSettings;
 class SkDrawFilter;
 struct SkIPoint;
 struct SkIRect;
@@ skipping 282 matching lines @@
     friend class GrDashLinePathRenderer;         // for access to drawBatch
     friend class GrAAHairLinePathRenderer;       // for access to drawBatch
     friend class GrAALinearizingConvexPathRenderer;  // for access to drawBatch
     friend class GrAADistanceFieldPathRenderer;  // for access to drawBatch
     friend class GrDefaultPathRenderer;          // for access to drawBatch
     friend class GrPLSPathRenderer;              // for access to drawBatch
     friend class GrMSAAPathRenderer;             // for access to drawBatch
     friend class GrStencilAndCoverPathRenderer;  // for access to drawBatch
     friend class GrTessellatingPathRenderer;     // for access to drawBatch
 
+    void internalClear(const GrFixedClip&, const GrColor, bool canIgnoreClip);
+
     bool drawFilledDRRect(const GrClip& clip,
                           const GrPaint& paint,
                           const SkMatrix& viewMatrix,
                           const SkRRect& origOuter,
                           const SkRRect& origInner);
 
     bool drawFilledRect(const GrClip& clip,
                         const GrPaint& paint,
                         const SkMatrix& viewMatrix,
                         const SkRect& rect,
@@ skipping 31 matching lines @@
 
     sk_sp<SkColorSpace>               fColorSpace;
     SkSurfaceProps                    fSurfaceProps;
     GrAuditTrail*                     fAuditTrail;
 
     // In debug builds we guard against improper thread handling
     SkDEBUGCODE(mutable GrSingleOwner* fSingleOwner;)
 };
 
 #endif