Adding MOJO_HANDLE_SIGNAL_PEER_CLOSED to be notified when a peer is closed.

mojo/edk/system/channel_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/edk/system/channel.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/message_loop/message_loop.h"
 #include "base/test/test_io_thread.h"
@@ skipping 225 matching lines @@
   // Don't wait for the shutdown to run ...
   io_thread()->PostTask(FROM_HERE,
                         base::Bind(&ChannelTest::ShutdownChannelOnIOThread,
                                    base::Unretained(this)));
 
   // ... since this |Wait()| should fail once the channel is shut down.
   EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
             waiter.Wait(MOJO_DEADLINE_INDEFINITE, nullptr));
   HandleSignalsState hss;
   mp->RemoveWaiter(0, &waiter, &hss);
-  EXPECT_EQ(0u, hss.satisfied_signals);
-  EXPECT_EQ(0u, hss.satisfiable_signals);
+  EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
+  EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
 
   mp->Close(0);
 
   EXPECT_TRUE(channel()->HasOneRef());
 }
 
 // ChannelTest.WaitAfterAttachRunAndShutdown -----------------------------------
 
 TEST_F(ChannelTest, WaitAfterAttachRunAndShutdown) {
   io_thread()->PostTaskAndWait(FROM_HERE,
@@ skipping 14 matching lines @@
 
   io_thread()->PostTaskAndWait(
       FROM_HERE, base::Bind(&ChannelTest::ShutdownChannelOnIOThread,
                             base::Unretained(this)));
 
   Waiter waiter;
   waiter.Init();
   HandleSignalsState hss;
   EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
             mp->AddWaiter(0, &waiter, MOJO_HANDLE_SIGNAL_READABLE, 123, &hss));
-  EXPECT_EQ(0u, hss.satisfied_signals);
-  EXPECT_EQ(0u, hss.satisfiable_signals);
+  EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
+  EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
 
   mp->Close(0);
 
   EXPECT_TRUE(channel()->HasOneRef());
 }
 
 // TODO(vtl): More. ------------------------------------------------------------
 
 }  // namespace
 }  // namespace system
 }  // namespace mojo