Close detached DevTools window (rather than open a new instance) when it receives an F12 keypress

chrome/browser/ui/browser_commands.cc

 // Copyright (c) 2012 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/ui/browser_commands.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_editor.h"
@@ skipping 802 matching lines @@
 void FocusPreviousPane(Browser* browser) {
   content::RecordAction(UserMetricsAction("FocusPreviousPane"));
   browser->window()->RotatePaneFocus(false);
 }
 
 void ToggleDevToolsWindow(Browser* browser, DevToolsToggleAction action) {
   if (action == DEVTOOLS_TOGGLE_ACTION_SHOW_CONSOLE)
     content::RecordAction(UserMetricsAction("DevTools_ToggleConsole"));
   else
     content::RecordAction(UserMetricsAction("DevTools_ToggleWindow"));
-
-  DevToolsWindow::ToggleDevToolsWindow(
-      GetActiveWebContents(browser)->GetRenderViewHost(),
-      action);
+  DevToolsWindow::ToggleDevToolsWindow(browser, action);
 }
 
 bool CanOpenTaskManager() {
 #if defined(OS_WIN)
   // In metro we can't display the task manager, as it is a native window.
   return !base::win::IsMetroProcess();
 #else
   return true;
 #endif
 }
@@ skipping 165 matching lines @@
         BrowserCommandsTabContentsCreator::CreateTabContents(contents);
   }
   app_browser->tab_strip_model()->AppendTabContents(tab_contents, true);
 
   contents->GetMutableRendererPrefs()->can_accept_load_drops = false;
   contents->GetRenderViewHost()->SyncRendererPrefs();
   app_browser->window()->Show();
 }
 
 }  // namespace chrome