Revert of Defer saves() until they're needed

src/core/SkPictureRecord.cpp

Index: src/core/SkPictureRecord.cpp
diff --git a/src/core/SkPictureRecord.cpp b/src/core/SkPictureRecord.cpp
index 67c4229e3d43290881c7a311b36769611fb0e104..778abb5f978537dd1aa4bb1102c6e1af14e8e3e3 100644
--- a/src/core/SkPictureRecord.cpp
+++ b/src/core/SkPictureRecord.cpp
@@ -324,13 +324,10 @@
     }
 
 #ifdef SK_DEBUG
-    // offset of 0 has been disabled, so we skip it
-    if (offset > 0) {
-        // assert that the final offset value points to a save verb
-        uint32_t opSize;
-        DrawType drawOp = peek_op_and_size(&fWriter, -offset, &opSize);
-        SkASSERT(SAVE == drawOp || SAVE_LAYER == drawOp);
-    }
+    // assert that the final offset value points to a save verb
+    uint32_t opSize;
+    DrawType drawOp = peek_op_and_size(&fWriter, -offset, &opSize);
+    SkASSERT(SAVE == drawOp || SAVE_LAYER == drawOp);
 #endif
 }