Pass isolate to ScriptPromise and ScriptString constructors

Source/bindings/v8/ScriptString.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "bindings/v8/ScriptString.h"
 
 namespace WebCore {
 
 ScriptString ScriptString::concatenateWith(const String& string)
 {
-    v8::Isolate* isolate = v8::Isolate::GetCurrent();
-    v8::HandleScope handleScope(isolate);
-    v8::Handle<v8::String> b = v8String(string, isolate);
+    v8::Isolate* nonNullIsolate = isolate();
+    v8::HandleScope handleScope(nonNullIsolate);
+    v8::Handle<v8::String> b = v8String(string, nonNullIsolate);
     if (hasNoValue())
-        return ScriptString(b);
+        return ScriptString(b, nonNullIsolate);
     v8::Handle<v8::String> a = v8::Handle<v8::String>::Cast(v8Value());
-    return ScriptString(v8::String::Concat(a, b));
+    return ScriptString(v8::String::Concat(a, b), nonNullIsolate);
 }
 
 String ScriptString::flattenToString() const
 {
     if (hasNoValue())
         return String();
-    v8::HandleScope handleScope(v8::Isolate::GetCurrent());
+    v8::HandleScope handleScope(isolate());
     v8::Handle<v8::String> value = v8::Handle<v8::String>::Cast(v8Value());
     return v8StringToWebCoreString<String>(value, Externalize);
 }
 
 } // namespace WebCore