Simplify detection of new, test-related RenderFrameHosts.

content/shell/browser/layout_test/blink_test_controller.h

 // Copyright 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 CONTENT_SHELL_BROWSER_LAYOUT_TEST_BLINK_TEST_CONTROLLER_H_
 #define CONTENT_SHELL_BROWSER_LAYOUT_TEST_BLINK_TEST_CONTROLLER_H_
 
 #include <map>
 #include <memory>
 #include <ostream>
@@ skipping 148 matching lines @@
 
   void DevToolsProcessCrashed();
 
   // WebContentsObserver implementation.
   bool OnMessageReceived(const IPC::Message& message) override;
   bool OnMessageReceived(const IPC::Message& message,
                          RenderFrameHost* render_frame_host) override;
   void PluginCrashed(const base::FilePath& plugin_path,
                      base::ProcessId plugin_pid) override;
   void RenderFrameCreated(RenderFrameHost* render_frame_host) override;
-  void RenderFrameHostChanged(RenderFrameHost* old_host,
-                              RenderFrameHost* new_host) override;
   void WebContentsDestroyed() override;
 
   // RenderProcessHostObserver implementation.
   void RenderProcessHostDestroyed(
       RenderProcessHost* render_process_host) override;
   void RenderProcessExited(RenderProcessHost* render_process_host,
                            base::TerminationStatus status,
                            int exit_code) override;
 
   // NotificationObserver implementation.
@@ skipping 104 matching lines @@
   // waiting on the UI thread while layout tests are being ran.
   ScopedAllowWaitForAndroidLayoutTests reduced_restrictions_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(BlinkTestController);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_BROWSER_LAYOUT_TEST_BLINK_TEST_CONTROLLER_H_