Revert of Fixes for SkRWBuffer

include/core/SkRWBuffer.h

Index: include/core/SkRWBuffer.h
diff --git a/include/core/SkRWBuffer.h b/include/core/SkRWBuffer.h
index ff807766d03ae94616900c3e96e52c11fb06ff93..d054e0a5fd554f706eb7f012c8dd2702638e69ef 100644
--- a/include/core/SkRWBuffer.h
+++ b/include/core/SkRWBuffer.h
@@ -67,9 +67,8 @@
 
 /**
  *  Accumulates bytes of memory that are "appended" to it, growing internal storage as needed.
- *  The growth is done such that at any time in the writer's thread, an RBuffer or StreamAsset
- *  can be snapped off (and safely passed to another thread). The RBuffer/StreamAsset snapshot
- *  can see the previously stored bytes, but will be unaware of any future writes.
+ *  The growth is done such that at any time, a RBuffer or StreamAsset can be snapped off, which
+ *  can see the previously stored bytes, but which will be unaware of any future writes.
  */
 class SK_API SkRWBuffer {
 public: