* Add the partial context snapshot to the VM executable if...

src/bootstrapper.cc

Index: src/bootstrapper.cc
===================================================================
--- src/bootstrapper.cc	(revision 3791)
+++ src/bootstrapper.cc	(working copy)
@@ -1262,7 +1262,7 @@
     current->set_state(v8::UNVISITED);
     current = current->next();
   }
-  // Install auto extensions
+  // Install auto extensions.  Coordinate with AutoExtensionsExist below.
   current = v8::RegisteredExtension::first_extension();
   while (current != NULL) {
     if (current->extension()->auto_enable())
@@ -1615,6 +1615,19 @@
 }
 
 
+// Are there extensions that should be installed even if no extension was
+// specified?
+bool Bootstrapper::AutoExtensionsExist() {
+  // Find auto extensions.
+  v8::RegisteredExtension* current = v8::RegisteredExtension::first_extension();
+  while (current != NULL) {
+    if (current->extension()->auto_enable()) return true;
+    current = current->next();
+  }
+  return FLAG_expose_gc;
+}
+
+
 // Reserve space for statics needing saving and restoring.
 int Genesis::ArchiveSpacePerThread() {
   return sizeof(current_);