SaveFlags be-gone

Remove the deprecated save(SaveFlags), willSave(SaveFlags) and all
traces of kMatrix_SaveFlags/kClip_SaveFlag.

BUG=skia:2297
R=mtklein@google.com, reed@google.com, robertphillips@google.com

Review URL: https://codereview.chromium.org/340403003
diff --git a/src/utils/SkNWayCanvas.cpp b/src/utils/SkNWayCanvas.cpp
index 505c05c..11e4a65 100644
--- a/src/utils/SkNWayCanvas.cpp
+++ b/src/utils/SkNWayCanvas.cpp
@@ -57,13 +57,13 @@
     SkCanvas* fCanvas;
 };
 
-void SkNWayCanvas::willSave(SaveFlags flags) {
+void SkNWayCanvas::willSave() {
     Iter iter(fList);
     while (iter.next()) {
-        iter->save(flags);
+        iter->save();
     }
 
-    this->INHERITED::willSave(flags);
+    this->INHERITED::willSave();
 }
 
 SkCanvas::SaveLayerStrategy SkNWayCanvas::willSaveLayer(const SkRect* bounds, const SkPaint* paint,