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

chrome/browser/debugger/devtools_manager.cc

 // Copyright (c) 2009 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.
 
 #include "chrome/browser/debugger/devtools_manager.h"
 
 #include <vector>
 
 #include "base/auto_reset.h"
 #include "base/message_loop.h"
@@ skipping 97 matching lines @@
   DCHECK(window);
   window->Activate();
 }
 
 void DevToolsManager::CloseWindow(RenderViewHost* client_rvh) {
   DevToolsClientHost* client_host = FindOnwerDevToolsClientHost(client_rvh);
   if (client_host)
     CloseWindow(client_host);
 }
 
-void DevToolsManager::DockWindow(RenderViewHost* client_rvh) {
+void DevToolsManager::RequestDockWindow(RenderViewHost* client_rvh) {
   ReopenWindow(client_rvh, true);
 }
 
-void DevToolsManager::UndockWindow(RenderViewHost* client_rvh) {
+void DevToolsManager::RequestUndockWindow(RenderViewHost* client_rvh) {
   ReopenWindow(client_rvh, false);
 }
 
 void DevToolsManager::OpenDevToolsWindow(RenderViewHost* inspected_rvh) {
   ToggleDevToolsWindow(inspected_rvh, true, false);
 }
 
 void DevToolsManager::ToggleDevToolsWindow(RenderViewHost* inspected_rvh,
                                            bool open_console) {
   ToggleDevToolsWindow(inspected_rvh, false, open_console);
@@ skipping 259 matching lines @@
                                        DevToolsClientHost* client_host) {
   DCHECK(inspected_rvh_to_client_host_.find(inspected_rvh)->second ==
       client_host);
   DCHECK(client_host_to_inspected_rvh_.find(client_host)->second ==
       inspected_rvh);
 
   inspected_rvh_to_client_host_.erase(inspected_rvh);
   client_host_to_inspected_rvh_.erase(client_host);
   runtime_features_map_.erase(inspected_rvh);
 }