Option to output precompiled instructions as a blob for use with mmap instead of assembly for use i…

runtime/bin/file_win.cc

Index: runtime/bin/file_win.cc
diff --git a/runtime/bin/file_win.cc b/runtime/bin/file_win.cc
index 3fee579fe18ccb47ca2e69b599f2af0f391500af..db3aef81d2237192dd39c8795b1fdc9ba29ece35 100644
--- a/runtime/bin/file_win.cc
+++ b/runtime/bin/file_win.cc
@@ -73,6 +73,12 @@ bool File::IsClosed() {
 }
 
 
+void* File::MapExecutable(intptr_t* len) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
 int64_t File::Read(void* buffer, int64_t num_bytes) {
   ASSERT(handle_->fd() >= 0);
   return read(handle_->fd(), buffer, num_bytes);