[chromedriver] Implement command: executeAsyncScript and setScriptTimeout

chrome/test/chromedriver/window_commands.h

Index: chrome/test/chromedriver/window_commands.h
diff --git a/chrome/test/chromedriver/window_commands.h b/chrome/test/chromedriver/window_commands.h
index 4495606f4b835d4299befc850b23fae00ceda7ad..cc7ab303e42a812795983bb87123b0af46071209 100644
--- a/chrome/test/chromedriver/window_commands.h
+++ b/chrome/test/chromedriver/window_commands.h
@@ -39,13 +39,20 @@ Status ExecuteGet(
     const base::DictionaryValue& params,
     scoped_ptr<base::Value>* value);
 
-// Evaluates a given script with arguments.
+// Evaluates a given synchronous script with arguments.
 Status ExecuteExecuteScript(
     Session* session,
     WebView* web_view,
     const base::DictionaryValue& params,
     scoped_ptr<base::Value>* value);
 
+// Evaluates a given asynchronous script with arguments.
+Status ExecuteExecuteAsyncScript(
+    Session* session,
+    WebView* web_view,
+    const base::DictionaryValue& params,
+    scoped_ptr<base::Value>* value);
+
 // Changes the targeted frame for the given session.
 Status ExecuteSwitchToFrame(
     Session* session,