Stop linking in the old Mojo EDK.

mojo/edk/system/data_pipe_unittest.cc

Index: mojo/edk/system/data_pipe_unittest.cc
diff --git a/mojo/edk/system/data_pipe_unittest.cc b/mojo/edk/system/data_pipe_unittest.cc
index af2cf3e6e815170e5c929df195fc2fd8c46a65dc..2bef49f7d09e65d44c0423696e27715c3de85192 100644
--- a/mojo/edk/system/data_pipe_unittest.cc
+++ b/mojo/edk/system/data_pipe_unittest.cc
@@ -35,10 +35,12 @@ const uint32_t kSizeOfOptions =
 // TODO(vtl): Get rid of this.
 const size_t kMaxPoll = 100;
 
+#if !defined(OS_IOS)
 // Used in Multiprocess test.
 const size_t kMultiprocessCapacity = 37;
 const char kMultiprocessTestData[] = "hello i'm a string that is 36 bytes";
 const int kMultiprocessMaxIter = 513;
+#endif
 
 class DataPipeTest : public testing::Test {
  public:
@@ -1633,6 +1635,8 @@ TEST_F(DataPipeTest, ConsumerWithClosedProducerSent) {
   ASSERT_EQ(MOJO_RESULT_OK, MojoClose(pipe1));
 }
 
+#if !defined(OS_IOS)
+
 bool WriteAllData(MojoHandle producer,
                   const void* elements,
                   uint32_t num_bytes) {
@@ -1847,6 +1851,8 @@ MOJO_MULTIPROCESS_TEST_CHILD_TEST(MultiprocessClient) {
   EXPECT_EQ(MOJO_RESULT_OK, MojoClose(client_mp));
 }
 
+#endif  // !defined(OS_IOS)
+
 }  // namespace
 }  // namespace edk
 }  // namespace mojo