Add some more volatile paths.

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 "SkCanvasPriv.h"
 #include "SkBitmapDevice.h"
@@ skipping 1482 matching lines @@
             // if the prev and curr clips disagree about aa -vs- not, favor the aa request.
             // perhaps we need an API change to avoid this sort of mixed-signals about
             // clipping.
             if (element->isAA()) {
                 edgeStyle = kSoft_ClipEdgeStyle;
             }
         }
         op = SkRegion::kReplace_Op;
     }
 
+    devPath.setIsVolatile(true);
     rasterclip_path(&fMCRec->fRasterClip, this, devPath, op, edgeStyle);
 }
 
 void SkCanvas::clipRegion(const SkRegion& rgn, SkRegion::Op op) {
     this->onClipRegion(rgn, op);
 }
 
 void SkCanvas::onClipRegion(const SkRegion& rgn, SkRegion::Op op) {
     AutoValidateClip avc(this);
 
@@ skipping 27 matching lines @@
             case SkClipStack::Element::kRect_Type:
                 element->getRect().round(&ir);
                 tmpClip.op(ir, element->getOp());
                 break;
             case SkClipStack::Element::kEmpty_Type:
                 tmpClip.setEmpty();
                 break;
             default: {
                 SkPath path;
                 element->asPath(&path);
+                path.setIsVolatile(true);

[bsalomon, 2014/10/24 17:29:18]

If this is coming out of the clipstack and copying copies the bit then maybe we
don't need it here?

                 rasterclip_path(&tmpClip, this, path, element->getOp(), element->isAA());
                 break;
             }
         }
     }
 }
 #endif
 
 void SkCanvas::replayClips(ClipVisitor* visitor) const {
     SkClipStack::B2TIter                iter(fClipStack);
@@ skipping 990 matching lines @@
     }
 
     if (matrix) {
         canvas->concat(*matrix);
     }
 }
 
 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() {
     fCanvas->restoreToCount(fSaveCount);
 }