[chromedriver] Support clicking an element in sub frames.

chrome/test/chromedriver/web_view.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_WEB_VIEW_H_
 #define CHROME_TEST_CHROMEDRIVER_WEB_VIEW_H_
 
 #include <list>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
+#include "chrome/test/chromedriver/basic_types.h"
 
 namespace base {
 class ListValue;
 class Value;
 }
 
 class JavaScriptDialogManager;
 struct KeyEvent;
 struct MouseEvent;
 class Status;
@@ skipping 61 matching lines @@
   virtual Status WaitForPendingNavigations(const std::string& frame_id) = 0;
 
   // Returns the frame id for the main frame.
   virtual Status GetMainFrame(std::string* out_frame) = 0;
 
   // Returns the JavaScriptDialogManager. Never null.
   virtual JavaScriptDialogManager* GetJavaScriptDialogManager() = 0;
 
   // Captures the visible portions of the web view as a base64-encoded PNG.
   virtual Status CaptureScreenshot(std::string* screenshot) = 0;
+
+  // Return a list of Frame, from the given frame to the main frame.
+  virtual Status GetFramePath(const std::string& frame_id,
+                              std::list<Frame>* frames) = 0;
 };
 
 #endif  // CHROME_TEST_CHROMEDRIVER_WEB_VIEW_H_