Revert "Require V8 to be explicitly initialized before an Isolate is created"

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index e6f8a133123995a8191a3832a3c99cd6881e332d..855080c34869ea5b69d800df9f8f34ec626733aa 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -2594,6 +2594,9 @@ Genesis::Genesis(Isolate* isolate,
       active_(isolate->bootstrapper()) {
   NoTrackDoubleFieldsForSerializerScope disable_scope(isolate);
   result_ = Handle<Context>::null();
+  // If V8 cannot be initialized, just return.
+  if (!V8::Initialize(NULL)) return;
+
   // Before creating the roots we must save the context and restore it
   // on all function exits.
   SaveContext saved_context(isolate);