remove fClipStack and attach/deattach-from-canvas

src/core/SkDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkColorFilter.h"
 #include "SkDevice.h"
 #include "SkDraw.h"
 #include "SkDrawFilter.h"
 #include "SkImage_Base.h"
 #include "SkImageFilter.h"
 #include "SkImageFilterCache.h"
 #include "SkMetaData.h"
 #include "SkNinePatchIter.h"
 #include "SkPatchUtils.h"
 #include "SkPathMeasure.h"
 #include "SkRasterClip.h"
 #include "SkRSXform.h"
 #include "SkShader.h"
 #include "SkSpecialImage.h"
 #include "SkTextBlobRunIterator.h"
 #include "SkTextToPathIter.h"
 
-SkBaseDevice::SkBaseDevice(const SkSurfaceProps& surfaceProps)
-    : fSurfaceProps(surfaceProps)
-#ifdef SK_DEBUG
-    , fAttachedToCanvas(false)
-#endif
-{
+SkBaseDevice::SkBaseDevice(const SkSurfaceProps& surfaceProps) : fSurfaceProps(surfaceProps) {
     fOrigin.setZero();
     fMetaData = nullptr;
 }
 
 SkBaseDevice::~SkBaseDevice() { delete fMetaData; }
 
 SkMetaData& SkBaseDevice::getMetaData() {
     // metadata users are rare, so we lazily allocate it. If that changes we
     // can decide to just make it a field in the device (rather than a ptr)
     if (nullptr == fMetaData) {
@@ skipping 475 matching lines @@
 
     // Also log filter quality independent scale factor.
     SK_HISTOGRAM_ENUMERATION("DrawScaleFactor.AnyFilterQuality", scaleFactor,
                              kLast_ScaleFactor + 1);
 
     // Also log an overall histogram of filter quality.
     SK_HISTOGRAM_ENUMERATION("FilterQuality", filterQuality, kLast_SkFilterQuality + 1);
 #endif
 }