Revert of Revert of Revert "De-virtualize SkCanvas save/restore." (https://codereview.chromium.org/196323003/)

Reason for revert:
Pulling out to rename the virtuals.

Original issue's description:
> Revert of Revert "De-virtualize SkCanvas save/restore." (https://codereview.chromium.org/194923008/)
>
> Reason for revert:
> Re-landing after roll fix.
>
> Original issue's description:
> > Revert "De-virtualize SkCanvas save/restore."
> >
> > (To allow a roll fix into the tree).
> >
> > This reverts commit edf702204be42c945254191f9f9cd6585b3d189b.
> >
> > R=halcanary@google.com
> >
> > Committed: https://code.google.com/p/skia/source/detail?r=13748
>
> TBR=halcanary@google.com,fmalita@chromium.org
> NOTREECHECKS=true
> NOTRY=true
>
> Committed: http://code.google.com/p/skia/source/detail?r=13754

R=halcanary@google.com, fmalita@chromium.org
TBR=fmalita@chromium.org, halcanary@google.com
NOTREECHECKS=true
NOTRY=true

Author: fmalita@google.com

Review URL: https://codereview.chromium.org/197553002

git-svn-id: http://skia.googlecode.com/svn/trunk@13765 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/pipe/SkGPipeWrite.cpp b/src/pipe/SkGPipeWrite.cpp
index 146f49c..43209f6 100644
--- a/src/pipe/SkGPipeWrite.cpp
+++ b/src/pipe/SkGPipeWrite.cpp
@@ -229,6 +229,10 @@
     }
 
     // overrides from SkCanvas
+    virtual int save(SaveFlags) SK_OVERRIDE;
+    virtual int saveLayer(const SkRect* bounds, const SkPaint*,
+                          SaveFlags) SK_OVERRIDE;
+    virtual void restore() SK_OVERRIDE;
     virtual bool isDrawingToLayer() const SK_OVERRIDE;
     virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE;
     virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE;
@@ -283,10 +287,6 @@
     bool shuttleBitmap(const SkBitmap&, int32_t slot);
 
 protected:
-    virtual void onSave(SaveFlags) SK_OVERRIDE;
-    virtual bool onSaveLayer(const SkRect*, const SkPaint*, SaveFlags) SK_OVERRIDE;
-    virtual void onRestore() SK_OVERRIDE;
-
     virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
 
     virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
@@ -514,17 +514,16 @@
 #define NOTIFY_SETUP(canvas)    \
     AutoPipeNotify apn(canvas)
 
-void SkGPipeCanvas::onSave(SaveFlags flags) {
+int SkGPipeCanvas::save(SaveFlags flags) {
     NOTIFY_SETUP(this);
     if (this->needOpBytes()) {
         this->writeOp(kSave_DrawOp, 0, flags);
     }
-
-    this->INHERITED::onSave(flags);
+    return this->INHERITED::save(flags);
 }
 
-bool SkGPipeCanvas::onSaveLayer(const SkRect* bounds, const SkPaint* paint,
-                                SaveFlags saveFlags) {
+int SkGPipeCanvas::saveLayer(const SkRect* bounds, const SkPaint* paint,
+                             SaveFlags saveFlags) {
     NOTIFY_SETUP(this);
     size_t size = 0;
     unsigned opFlags = 0;
@@ -548,23 +547,21 @@
     if (kNoSaveLayer == fFirstSaveLayerStackLevel){
         fFirstSaveLayerStackLevel = this->getSaveCount();
     }
-
-    this->INHERITED::onSaveLayer(bounds, paint, saveFlags);
-    // we don't create a layer
-    return false;
+    // we just pass on the save, so we don't create a layer
+    return this->INHERITED::save(saveFlags);
 }
 
-void SkGPipeCanvas::onRestore() {
+void SkGPipeCanvas::restore() {
     NOTIFY_SETUP(this);
     if (this->needOpBytes()) {
         this->writeOp(kRestore_DrawOp);
     }
 
-    if (this->getSaveCount() - 1 == fFirstSaveLayerStackLevel){
+    this->INHERITED::restore();
+
+    if (this->getSaveCount() == fFirstSaveLayerStackLevel){
         fFirstSaveLayerStackLevel = kNoSaveLayer;
     }
-
-    this->INHERITED::onRestore();
 }
 
 bool SkGPipeCanvas::isDrawingToLayer() const {