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

chrome/browser/ui/browser_command_controller.cc

Index: chrome/browser/ui/browser_command_controller.cc
diff --git a/chrome/browser/ui/browser_command_controller.cc b/chrome/browser/ui/browser_command_controller.cc
index 8ef341eebff00bfd37a544c5d4cfc7c5120054ff..20c1cc4f6f338223c3ffa4cd34e229bd475b5cdf 100644
--- a/chrome/browser/ui/browser_command_controller.cc
+++ b/chrome/browser/ui/browser_command_controller.cc
@@ -493,6 +493,9 @@ void BrowserCommandController::ExecuteCommandWithDisposition(
     case IDC_DEV_TOOLS_INSPECT:
       ToggleDevToolsWindow(browser_, DEVTOOLS_TOGGLE_ACTION_INSPECT);
       break;
+    case IDC_DEV_TOOLS_TOGGLE_INSPECTOR:
+      ToggleDevToolsWindow(browser_, DEVTOOLS_TOGGLE_ACTION_TOGGLE_INSPECTOR);
+      break;
     case IDC_TASK_MANAGER:
       OpenTaskManager(browser_, false);
       break;
@@ -929,6 +932,8 @@ void BrowserCommandController::UpdateCommandsForDevTools() {
                                         dev_tools_enabled);
   command_updater_.UpdateCommandEnabled(IDC_DEV_TOOLS_INSPECT,
                                         dev_tools_enabled);
+  command_updater_.UpdateCommandEnabled(IDC_DEV_TOOLS_TOGGLE_INSPECTOR,
+                                        dev_tools_enabled);
 }
 
 void BrowserCommandController::UpdateCommandsForBookmarkEditing() {