remove Isolate::Current from most files starting with 's' through 'v'

src/snapshot.h

Index: src/snapshot.h
diff --git a/src/snapshot.h b/src/snapshot.h
index 149306e4421c4f1192c5237e3982cb11ad0249da..4041f2925e5bf538569e3c661cafd5c361ea326b 100644
--- a/src/snapshot.h
+++ b/src/snapshot.h
@@ -43,7 +43,7 @@ class Snapshot {
   static bool HaveASnapshotToStartFrom();
 
   // Create a new context using the internal partial snapshot.
-  static Handle<Context> NewContextFromSnapshot();
+  static Handle<Context> NewContextFromSnapshot(Isolate* isolate);
 
   // Returns whether or not the snapshot is enabled.
   static bool IsEnabled() { return size_ != 0; }