Add typed data interface to Dart API, this only changes the C++ API as dicussed in a previous email…

bin/socket.cc

Index: bin/socket.cc
===================================================================
--- bin/socket.cc	(revision 18484)
+++ bin/socket.cc	(working copy)
@@ -180,15 +180,18 @@
 
   intptr_t total_bytes_written = 0;
   intptr_t bytes_written = 0;
-  if (Dart_IsByteArrayExternal(buffer_obj)) {
+  if (Dart_IsExternalTypedData(buffer_obj) != kInvalid) {
+    Dart_TypedData_Type type;
     void* buffer = NULL;
-    result = Dart_ExternalByteArrayGetData(buffer_obj, &buffer);
+    intptr_t len;
+    result = Dart_TypedDataAcquireData(buffer_obj, &type, &buffer, &len);
     if (Dart_IsError(result)) {
       Dart_PropagateError(result);
     }
     buffer = static_cast<void*>((static_cast<uint8_t*>(buffer) + offset));
     bytes_written = Socket::Write(socket, buffer, length);
     if (bytes_written > 0) total_bytes_written = bytes_written;
+    Dart_TypedDataReleaseData(buffer_obj);
   } else {
     // Send data in chunks of maximum 16KB.
     const intptr_t max_chunk_length =