Remove SkAutoTUnref and SkAutoTDelete from public includes.

src/core/SkCanvas.cpp

Index: src/core/SkCanvas.cpp
diff --git a/src/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index bcda0f2526ca712a95eb4525da0dc8172f1ee707..7c9f5c6cd5259e3bca93f3e16a6bf036912f4bc7 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -319,15 +319,14 @@ static SkIRect compute_device_bounds(SkBaseDevice* device) {
 class SkDrawIter : public SkDraw {
 public:
     SkDrawIter(SkCanvas* canvas) {
-        canvas = canvas->canvasForDrawIter();
         canvas->updateDeviceCMCache();
 
-        fClipStack = canvas->fClipStack;
+        fClipStack = canvas->getClipStack();
         fCurrLayer = canvas->fMCRec->fTopLayer;
 
         fMultiDeviceCS = nullptr;
         if (fCurrLayer->fNext) {
-            fMultiDeviceCS = canvas->fClipStack;
+            fMultiDeviceCS = canvas->fClipStack.get();
             fMultiDeviceCS->save();
         }
     }
@@ -966,10 +965,6 @@ bool SkCanvas::writePixels(const SkImageInfo& origInfo, const void* pixels, size
     return device->writePixels(info, pixels, rowBytes, target.x(), target.y());
 }
 
-SkCanvas* SkCanvas::canvasForDrawIter() {
-    return this;
-}
-
 //////////////////////////////////////////////////////////////////////////////
 
 void SkCanvas::updateDeviceCMCache() {