When Chrome hands off a URL to be opened by the external host by the ViewHost...

chrome/test/automation/tab_proxy.h

 // Copyright (c) 2006-2008 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_AUTOMATION_TAB_PROXY_H_
 #define CHROME_TEST_AUTOMATION_TAB_PROXY_H_
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
@@ skipping 90 matching lines @@
   // completes or timeout (in milliseconds) occurs. If return after timeout,
   // is_timeout is set to true.
   AutomationMsg_NavigationResponseValues NavigateToURLWithTimeout(
       const GURL& url, int number_of_navigations, uint32 timeout_ms,
       bool* is_timeout);
 
   // Navigates to a url in an externally hosted tab.
   // This method accepts the same kinds of URL input that
   // can be passed to Chrome on the command line. This is a synchronous call and
   // hence blocks until the navigation completes.
-  AutomationMsg_NavigationResponseValues NavigateInExternalTab(const GURL& url);
+  AutomationMsg_NavigationResponseValues NavigateInExternalTab(
+      const GURL& url, const GURL& referrer);
+
   AutomationMsg_NavigationResponseValues NavigateExternalTabAtIndex(int index);
 
   // Navigates to a url. This is an asynchronous version of NavigateToURL.
   // The function returns immediately after sending the LoadURL notification
   // to the browser.
   // TODO(vibhor): Add a callback if needed in future.
   // TODO(mpcomplete): If the navigation results in an auth challenge, the
   // TabProxy we attach won't know about it.  See bug 666730.
   bool NavigateToURLAsync(const GURL& url);
 
@@ skipping 225 matching lines @@
   void OnMessageReceived(const IPC::Message& message);
  protected:
   virtual ~TabProxy() {}
  private:
   Lock list_lock_;  // Protects the observers_list_.
   ObserverList<TabProxyDelegate> observers_list_;
   DISALLOW_COPY_AND_ASSIGN(TabProxy);
 };
 
 #endif  // CHROME_TEST_AUTOMATION_TAB_PROXY_H_