Replaced read() call with FDUtils functions to fix Windows build.

runtime/bin/vmstats_impl.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "bin/vmstats_impl.h"
 
 #include <sstream>
 
 #include "bin/fdutils.h"
 #include "bin/file.h"
@@ skipping 139 matching lines @@
       return;
     }
     FDUtils::SetBlocking(socket);
 
     // TODO(tball): rewrite this to use STL, so as to eliminate the static
     // buffer and support resource URLs that are longer than BUFSIZE.
 
     // Read request.
     // TODO(tball): support partial reads, possibly needed for POST uploads.
     char buffer[BUFSIZE + 1];
-    int len = read(socket, buffer, BUFSIZE);
+    size_t count = FDUtils::AvailableBytes(socket);
+    if (count > BUFSIZE) {
+      count = BUFSIZE;
+    }
+    intptr_t len = FDUtils::ReadFromBlocking(socket, buffer, count);
     if (len <= 0) {
       // Invalid HTTP request, ignore.
       continue;
     }
     buffer[len] = '\0';
 
     // Verify it's a GET request.
     // TODO(tball): support POST requests.
     if (strncmp("GET ", buffer, 4) != 0 && strncmp("get ", buffer, 4) != 0) {
       Log::PrintErr("Unsupported HTTP request type");
@@ skipping 152 matching lines @@
   VmStatusPlugin* plugin = instance_->registered_plugin_list_;
   while (plugin != NULL) {
     char* result = (plugin->callback())(request);
     if (result != NULL) {
       return result;
     }
     plugin = plugin->next();
   }
   return NULL;
 }