IPC::Message -> base::Pickle

ipc/ipc_message.h

Index: ipc/ipc_message.h
diff --git a/ipc/ipc_message.h b/ipc/ipc_message.h
index a6c641d7104644536f93df6d975b51dceca41ea5..d6f49fcca8ce1d14e9909d0598dc985b7962c167 100644
--- a/ipc/ipc_message.h
+++ b/ipc/ipc_message.h
@@ -221,11 +221,13 @@ class IPC_EXPORT Message : public base::Pickle {
 
   // WriteAttachment appends |attachment| to the end of the set. It returns
   // false iff the set is full.
-  bool WriteAttachment(scoped_refptr<MessageAttachment> attachment);
+  bool WriteAttachment(
+      scoped_refptr<base::Pickle::Attachment> attachment) override;
   // ReadAttachment parses an attachment given the parsing state |iter| and
   // writes it to |*attachment|. It returns true on success.
-  bool ReadAttachment(base::PickleIterator* iter,
-                      scoped_refptr<MessageAttachment>* attachment) const;
+  bool ReadAttachment(
+      base::PickleIterator* iter,
+      scoped_refptr<base::Pickle::Attachment>* attachment) const override;
   // Returns true if there are any attachment in this message.
   bool HasAttachments() const;
   // Returns true if there are any MojoHandleAttachments in this message.