Added Socket::SetBlocking() and Socket::SetNonBlocking().

runtime/bin/socket_macos.cc

Index: runtime/bin/socket_macos.cc
===================================================================
--- runtime/bin/socket_macos.cc	(revision 19251)
+++ runtime/bin/socket_macos.cc	(working copy)
@@ -36,7 +36,7 @@
   }
 
   FDUtils::SetCloseOnExec(fd);
-  FDUtils::SetNonBlocking(fd);
+  Socket::SetNonBlocking(fd);
 
   server = gethostbyname(host);
   if (server == NULL) {
@@ -226,7 +226,7 @@
     return -1;
   }
 
-  FDUtils::SetNonBlocking(fd);
+  Socket::SetNonBlocking(fd);
   return fd;
 }
 
@@ -245,7 +245,7 @@
       socket = kTemporaryFailure;
     }
   } else {
-    FDUtils::SetNonBlocking(socket);
+    Socket::SetNonBlocking(socket);
   }
   return socket;
 }
@@ -262,4 +262,14 @@
   }
 }
 
+
+bool Socket::SetNonBlocking(intptr_t fd) {
+  return FDUtils::SetNonBlocking(fd);
+}
+
+
+bool Socket::SetBlocking(intptr_t fd) {
+  return FDUtils::SetBlocking(fd);
+}
+
 #endif  // defined(TARGET_OS_MACOS)