Fix other build errors from r352208.

mojo/edk/system/data_pipe_unittest.cc

 // Copyright 2015 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 <stdint.h>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/edk/embedder/platform_channel_pair.h"
 #include "mojo/edk/embedder/simple_platform_support.h"
 #include "mojo/edk/system/test_utils.h"
 #include "mojo/edk/system/waiter.h"
 #include "mojo/public/c/system/data_pipe.h"
 #include "mojo/public/c/system/functions.h"
 #include "mojo/public/cpp/system/macros.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
 namespace edk {
 namespace {
 
-const MojoHandleSignals kSignalAll = MOJO_HANDLE_SIGNAL_READABLE |
-                                     MOJO_HANDLE_SIGNAL_WRITABLE |
-                                     MOJO_HANDLE_SIGNAL_PEER_CLOSED;
 const uint32_t kSizeOfOptions =
     static_cast<uint32_t>(sizeof(MojoCreateDataPipeOptions));
 
 // In various places, we have to poll (since, e.g., we can't yet wait for a
 // certain amount of data to be available). This is the maximum number of
 // iterations (separated by a short sleep).
 // TODO(vtl): Get rid of this.
 const size_t kMaxPoll = 100;
 
 class DataPipeTest : public test::MojoSystemTest {
@@ skipping 1527 matching lines @@
 
   // Still one element available.
   num_bytes = 0u;
   ASSERT_EQ(MOJO_RESULT_OK, QueryData(&num_bytes));
   ASSERT_EQ(1u * sizeof(int32_t), num_bytes);
 }
 
 }  // namespace
 }  // namespace edk
 }  // namespace mojo