Build targets from mojo_base on iOS

mojo/system/message_pipe_test_utils.h

 // 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.
 
 #ifndef MOJO_SYSTEM_MESSAGE_PIPE_TEST_UTILS_H_
 #define MOJO_SYSTEM_MESSAGE_PIPE_TEST_UTILS_H_
 
 #include "base/test/test_io_thread.h"
 #include "mojo/common/test/multiprocess_test_helper.h"
 #include "mojo/embedder/simple_platform_support.h"
@@ skipping 23 matching lines @@
                              scoped_refptr<MessagePipe> message_pipe);
   void ShutdownChannelOnIOThread();
 
   embedder::PlatformSupport* const platform_support_;
   base::TestIOThread test_io_thread_;
   scoped_refptr<Channel> channel_;
 
   DISALLOW_COPY_AND_ASSIGN(ChannelThread);
 };
 
+#if !defined(OS_IOS)
 class MultiprocessMessagePipeTestBase : public testing::Test {
  public:
   MultiprocessMessagePipeTestBase();
   virtual ~MultiprocessMessagePipeTestBase();
 
  protected:
   void Init(scoped_refptr<MessagePipe> mp);
 
   embedder::PlatformSupport* platform_support() { return &platform_support_; }
   mojo::test::MultiprocessTestHelper* helper() { return &helper_; }
 
  private:
   embedder::SimplePlatformSupport platform_support_;
   ChannelThread channel_thread_;
   mojo::test::MultiprocessTestHelper helper_;
 
   DISALLOW_COPY_AND_ASSIGN(MultiprocessMessagePipeTestBase);
 };
+#endif
 
 }  // namespace test
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_SYSTEM_MESSAGE_PIPE_TEST_HELPER_H_