Remove IPC::BrokerableAttachment.

ipc/ipc_channel_reader_unittest.cc

Index: ipc/ipc_channel_reader_unittest.cc
diff --git a/ipc/ipc_channel_reader_unittest.cc b/ipc/ipc_channel_reader_unittest.cc
index 16c6649c3a1f166627d393e42f83a632b5c52524..a3d80dc922e7631e1bdf2eb1a256f6c01494dd64 100644
--- a/ipc/ipc_channel_reader_unittest.cc
+++ b/ipc/ipc_channel_reader_unittest.cc
@@ -12,7 +12,6 @@
 #include <set>
 
 #include "base/run_loop.h"
-#include "ipc/brokerable_attachment.h"
 #include "ipc/ipc_channel_reader.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -39,7 +38,7 @@ class MockChannelReader : public ChannelReader {
 
   bool ShouldDispatchInputMessage(Message* msg) override { return true; }
 
-  bool GetNonBrokeredAttachments(Message* msg) override { return true; }
+  bool GetAttachments(Message* msg) override { return true; }
 
   bool DidEmptyInputBuffers() override { return true; }