Remove SkCanvas::isDrawingToLayer

src/core/SkCanvas.cpp

 /*
  * Copyright 2008 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.
  */
 
 #include "SkCanvas.h"
 #include "SkCanvasDrawable.h"
 #include "SkCanvasPriv.h"
@@ skipping 1028 matching lines @@
             // reset this, since internalDrawDevice will have set it to true
             fDeviceCMDirty = true;
 
             SkASSERT(fSaveLayerCount > 0);
             fSaveLayerCount -= 1;
         }
         SkDELETE(layer);
     }
 }
 
-bool SkCanvas::isDrawingToLayer() const {
-    return fSaveLayerCount > 0;
-}
-
 SkSurface* SkCanvas::newSurface(const SkImageInfo& info, const SkSurfaceProps* props) {
     if (NULL == props) {
         props = &fProps;
     }
     return this->onNewSurface(info, *props);
 }
 
 SkSurface* SkCanvas::onNewSurface(const SkImageInfo& info, const SkSurfaceProps& props) {
     SkBaseDevice* dev = this->getDevice();
     return dev ? dev->newSurface(info, props) : NULL;
@@ skipping 1439 matching lines @@
     }
 
     if (matrix) {
         canvas->concat(*matrix);
     }
 }
 
 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() {
     fCanvas->restoreToCount(fSaveCount);
 }