Remove SkCanvas::isDrawingToLayer

include/core/SkCanvas.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkCanvas_DEFINED
 #define SkCanvas_DEFINED
 
@@ skipping 380 matching lines @@
     int getSaveCount() const;
 
     /** Efficient way to pop any calls to save() that happened after the save
         count reached saveCount. It is an error for saveCount to be greater than
         getSaveCount(). To pop all the way back to the initial matrix/clip context
         pass saveCount == 1.
         @param saveCount    The number of save() levels to restore from
     */
     void restoreToCount(int saveCount);
 
-    /** Returns true if drawing is currently going to a layer (from saveLayer)
-     *  rather than to the root device.
-     */
-    virtual bool isDrawingToLayer() const;
-
     /** Preconcat the current matrix with the specified translation
         @param dx   The distance to translate in X
         @param dy   The distance to translate in Y
     */
     void translate(SkScalar dx, SkScalar dy);
 
     /** Preconcat the current matrix with the specified scale.
         @param sx   The amount to scale in X
         @param sy   The amount to scale in Y
     */
@@ skipping 827 matching lines @@
     SkClipStack fClipStack;
     SkDeque     fMCStack;
     // points to top of stack
     MCRec*      fMCRec;
     // the first N recs that can fit here mean we won't call malloc
     uint32_t    fMCRecStorage[32];
 
     const SkSurfaceProps fProps;
 
     int         fSaveCount;         // value returned by getSaveCount()
-    int         fSaveLayerCount;    // number of successful saveLayer calls
 
     SkMetaData* fMetaData;
 
     SkSurface_Base*  fSurfaceBase;
     SkSurface_Base* getSurfaceBase() const { return fSurfaceBase; }
     void setSurfaceBase(SkSurface_Base* sb) {
         fSurfaceBase = sb;
     }
     friend class SkSurface_Base;
     friend class SkSurface_Gpu;
@@ skipping 227 matching lines @@
 
 class SkCanvasClipVisitor {
 public:
     virtual ~SkCanvasClipVisitor();
     virtual void clipRect(const SkRect&, SkRegion::Op, bool antialias) = 0;
     virtual void clipRRect(const SkRRect&, SkRegion::Op, bool antialias) = 0;
     virtual void clipPath(const SkPath&, SkRegion::Op, bool antialias) = 0;
 };
 
 #endif