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/core/SkRecords.h b/src/core/SkRecords.h
index 581ae21..02cfc64 100644
--- a/src/core/SkRecords.h
+++ b/src/core/SkRecords.h
@@ -183,7 +183,7 @@
 RECORD0(NoOp);
 
 RECORD0(Restore);
-RECORD1(Save, SkCanvas::SaveFlags, flags);
+RECORD0(Save);
 RECORD3(SaveLayer, Optional<SkRect>, bounds, Optional<SkPaint>, paint, SkCanvas::SaveFlags, flags);
 
 RECORD1(PushCull, SkRect, rect);