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

chrome/browser/ui/views/external_tab_container_win.cc

Index: chrome/browser/ui/views/external_tab_container_win.cc
diff --git a/chrome/browser/ui/views/external_tab_container_win.cc b/chrome/browser/ui/views/external_tab_container_win.cc
index 9944a7a0d8d98a847cbd58fbcbbc8660acdec367..5a960cb299d6c1d1a2aa6ebb0ab760cab02b104a 100644
--- a/chrome/browser/ui/views/external_tab_container_win.cc
+++ b/chrome/browser/ui/views/external_tab_container_win.cc
@@ -1069,18 +1069,27 @@ bool ExternalTabContainerWin::AcceleratorPressed(
     case IDC_DEV_TOOLS:
       DevToolsWindow::ToggleDevToolsWindow(
           tab_contents_->web_contents()->GetRenderViewHost(),
-          DEVTOOLS_TOGGLE_ACTION_NONE);
+          false,
+          DEVTOOLS_TOGGLE_ACTION_SHOW);
       break;
     case IDC_DEV_TOOLS_CONSOLE:
       DevToolsWindow::ToggleDevToolsWindow(
           tab_contents_->web_contents()->GetRenderViewHost(),
+          false,
           DEVTOOLS_TOGGLE_ACTION_SHOW_CONSOLE);
       break;
     case IDC_DEV_TOOLS_INSPECT:
       DevToolsWindow::ToggleDevToolsWindow(
           tab_contents_->web_contents()->GetRenderViewHost(),
+          false,
           DEVTOOLS_TOGGLE_ACTION_INSPECT);
       break;
+    case IDC_DEV_TOOLS_TOGGLE:
+      DevToolsWindow::ToggleDevToolsWindow(
+          tab_contents_->web_contents()->GetRenderViewHost(),
+          false,
+          DEVTOOLS_TOGGLE_ACTION_TOGGLE);
+      break;
     default:
       NOTREACHED() << "Unsupported accelerator: " << command_id;
       return false;