[DevTools] Added public method for async execution of scripts

public/web/WebLocalFrame.h

Index: public/web/WebLocalFrame.h
diff --git a/public/web/WebLocalFrame.h b/public/web/WebLocalFrame.h
index d8b56e1ed8cba63d2fc58b3312f0ac8c6331d7db..b6aac327a4cfcf52e8f9b406bbbbf7b74517f9ee 100644
--- a/public/web/WebLocalFrame.h
+++ b/public/web/WebLocalFrame.h
@@ -9,6 +9,8 @@
 
 namespace blink {
 
+class WebScriptCallback;
+
 // Interface for interacting with in process frames. This contains methods that
 // require interacting with a frame's document.
 // FIXME: Move lots of methods from WebFrame in here.
@@ -67,6 +69,11 @@ public:
 
 
     // Scripting --------------------------------------------------------------
+    virtual void asyncExecuteScriptAndReturnValue(const WebScriptSource&, WebScriptCallback*) = 0;
+    virtual void asyncExecuteScriptInIsolatedWorld(
+        int worldID, const WebScriptSource* sourceIn, unsigned numSources,
+        int extensionGroup, WebScriptCallback*) = 0;
+
     // ONLY FOR TESTS: Forwards to executeScriptAndReturnValue, but sets a fake
     // UserGestureIndicator before execution.
     virtual v8::Handle<v8::Value> executeScriptAndReturnValueForTests(const WebScriptSource&) = 0;