[chromedriver] Remove unnecessary round trips to Chrome.

chrome/test/chromedriver/alert_commands.h

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_TEST_CHROMEDRIVER_ALERT_COMMANDS_H_
+#define CHROME_TEST_CHROMEDRIVER_ALERT_COMMANDS_H_
+
+#include "base/callback_forward.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace base {
+class DictionaryValue;
+class Value;
+}
+
+struct Session;
+class Status;
+class WebView;
+
+typedef base::Callback<Status(
+    Session* session,
+    WebView* web_view,
+    const base::DictionaryValue&,
+    scoped_ptr<base::Value>*)> AlertCommand;
+
+// Executes an alert command.
+Status ExecuteAlertCommand(
+     const AlertCommand& alert_command,
+     Session* session,
+     const base::DictionaryValue& params,
+     scoped_ptr<base::Value>* value);
+
+// Returns whether an alert is open.
+Status ExecuteGetAlert(
+    Session* session,
+    WebView* web_view,
+    const base::DictionaryValue& params,
+    scoped_ptr<base::Value>* value);
+
+// Returns the text of the open alert.
+Status ExecuteGetAlertText(
+    Session* session,
+    WebView* web_view,
+    const base::DictionaryValue& params,
+    scoped_ptr<base::Value>* value);
+
+// Sets the value of the alert prompt.
+Status ExecuteSetAlertValue(
+    Session* session,
+    WebView* web_view,
+    const base::DictionaryValue& params,
+    scoped_ptr<base::Value>* value);
+
+// Accepts the open alert.
+Status ExecuteAcceptAlert(
+    Session* session,
+    WebView* web_view,
+    const base::DictionaryValue& params,
+    scoped_ptr<base::Value>* value);
+
+// Dismisses the open alert.
+Status ExecuteDismissAlert(
+    Session* session,
+    WebView* web_view,
+    const base::DictionaryValue& params,
+    scoped_ptr<base::Value>* value);
+
+#endif  // CHROME_TEST_CHROMEDRIVER_ALERT_COMMANDS_H_