Fix docking behaviour for devtools windows that don't have an associated browser window

chrome/browser/renderer_host/render_view_host.h

 // Copyright (c) 2010 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_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 545 matching lines @@
   void DidPrintPage(const ViewHostMsg_DidPrintPage_Params& params);
   void OnAddMessageToConsole(const std::wstring& message,
                              int32 line_no,
                              const std::wstring& source_id);
 
   void OnUpdateInspectorSettings(const std::string& raw_settings);
   void OnForwardToDevToolsAgent(const IPC::Message& message);
   void OnForwardToDevToolsClient(const IPC::Message& message);
   void OnActivateDevToolsWindow();
   void OnCloseDevToolsWindow();
-  void OnDockDevToolsWindow();
-  void OnUndockDevToolsWindow();
+  void OnRequestDockDevToolsWindow();
+  void OnRequestUndockDevToolsWindow();
   void OnDevToolsRuntimeFeatureStateChanged(const std::string& feature,
                                             bool enabled);
 
   void OnUserMetricsRecordAction(const std::string& action);
   void OnMissingPluginStatus(int status);
   void OnCrashedPlugin(const FilePath& plugin_path);
 
   void OnReceivedSavableResourceLinksForCurrentPage(
       const std::vector<GURL>& resources_list,
       const std::vector<GURL>& referrers_list,
@@ skipping 106 matching lines @@
   // True if the render view can be shut down suddenly.
   bool sudden_termination_allowed_;
 
   // The session storage namespace id to be used by the associated render view.
   int64 session_storage_namespace_id_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_