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

src/snapshot-external.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Used for building with external snapshots.
 
 #include "src/snapshot.h"
 
 #include "src/serialize.h"
 #include "src/snapshot-source-sink.h"
@@ skipping 28 matching lines @@
 
 
 static SnapshotImpl* snapshot_impl_ = NULL;
 
 
 bool Snapshot::HaveASnapshotToStartFrom() {
   return snapshot_impl_ != NULL;
 }
 
 
-bool Snapshot::Initialize(Isolate* isolate) {
+bool Snapshot::Initialize() {
   if (!HaveASnapshotToStartFrom())
     return false;
 
   base::ElapsedTimer timer;
   if (FLAG_profile_deserialization) {
     timer.Start();
   }
   SnapshotByteSource source(snapshot_impl_->data, snapshot_impl_->size);
   Deserializer deserializer(&source);
   deserializer.set_reservation(NEW_SPACE, snapshot_impl_->new_space_used);
   deserializer.set_reservation(OLD_POINTER_SPACE,
                                snapshot_impl_->pointer_space_used);
   deserializer.set_reservation(OLD_DATA_SPACE,
                                snapshot_impl_->data_space_used);
   deserializer.set_reservation(CODE_SPACE, snapshot_impl_->code_space_used);
   deserializer.set_reservation(MAP_SPACE, snapshot_impl_->map_space_used);
   deserializer.set_reservation(CELL_SPACE, snapshot_impl_->cell_space_used);
   deserializer.set_reservation(PROPERTY_CELL_SPACE,
                                snapshot_impl_->property_cell_space_used);
-  bool success = isolate->Init(&deserializer);
+  bool success = V8::Initialize(&deserializer);
   if (FLAG_profile_deserialization) {
     double ms = timer.Elapsed().InMillisecondsF();
     PrintF("[Snapshot loading and deserialization took %0.3f ms]\n", ms);
   }
   return success;
 }
 
 
 Handle<Context> Snapshot::NewContextFromSnapshot(Isolate* isolate) {
   if (!HaveASnapshotToStartFrom())
@@ skipping 51 matching lines @@
   snapshot_impl_->context_data_space_used = source.GetInt();
   snapshot_impl_->context_code_space_used = source.GetInt();
   snapshot_impl_->context_map_space_used = source.GetInt();
   snapshot_impl_->context_cell_space_used = source.GetInt();
   snapshot_impl_->context_property_cell_space_used = source.GetInt();
 
   DCHECK(success);
 }
 
 } }  // namespace v8::internal