Fix base::GetNativeLibraryName() for Mac.

net/udp/udp_socket_posix.cc

Index: net/udp/udp_socket_posix.cc
diff --git a/net/udp/udp_socket_posix.cc b/net/udp/udp_socket_posix.cc
index f869256ca547b912ddd5853cbbdf0949f3e1db85..1fa8e2a94d05a329af15c0e638cb194d58abfb1c 100644
--- a/net/udp/udp_socket_posix.cc
+++ b/net/udp/udp_socket_posix.cc
@@ -350,8 +350,8 @@ int UDPSocketPosix::BindToNetwork(
   if (setNetworkForSocket == nullptr) {
     // Android's netd client library should always be loaded in our address
     // space as it shims libc functions like connect().
-    base::FilePath file(base::FilePath::FromUTF16Unsafe(
-        base::GetNativeLibraryName(base::ASCIIToUTF16("netd_client"))));
+    base::FilePath file(base::FilePath::FromUTF8Unsafe(
+        base::GetNativeLibraryName("netd_client")));
     base::NativeLibrary lib = base::LoadNativeLibrary(file, nullptr);
     setNetworkForSocket = reinterpret_cast<SetNetworkForSocket>(
         base::GetFunctionPointerFromNativeLibrary(lib, "setNetworkForSocket"));