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

chrome/browser/renderer_host/render_process_host_chrome_browsertest.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 "base/command_line.h"
 #include "chrome/browser/debugger/devtools_window.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/singleton_tabs.h"
@@ skipping 287 matching lines @@
   chrome::ToggleDevToolsWindow(browser(), DEVTOOLS_TOGGLE_ACTION_INSPECT);
   host_count++;
   EXPECT_EQ(tab_count, browser()->tab_count());
   EXPECT_EQ(host_count, RenderProcessHostCount());
 
   RenderViewHost* devtools = FindFirstDevToolsHost();
   DCHECK(devtools);
 
   // DevTools start in a separate process.
   DevToolsWindow::ToggleDevToolsWindow(
-      devtools, DEVTOOLS_TOGGLE_ACTION_INSPECT);
+      devtools, true, DEVTOOLS_TOGGLE_ACTION_INSPECT);
   host_count++;
   EXPECT_EQ(tab_count, browser()->tab_count());
   EXPECT_EQ(host_count, RenderProcessHostCount());
 }
 
 // Ensure that DevTools opened to debug DevTools is launched in a separate
 // process. See crbug.com/69873.
 IN_PROC_BROWSER_TEST_F(ChromeRenderProcessHostTest,
                        DevToolsOnSelfInOwnProcess) {
   int tab_count = 1;
@@ skipping 12 matching lines @@
   chrome::ToggleDevToolsWindow(browser(), DEVTOOLS_TOGGLE_ACTION_INSPECT);
   host_count++;
   EXPECT_EQ(tab_count, browser()->tab_count());
   EXPECT_EQ(host_count, RenderProcessHostCount());
 
   RenderViewHost* devtools = FindFirstDevToolsHost();
   DCHECK(devtools);
 
   // DevTools start in a separate process.
   DevToolsWindow::ToggleDevToolsWindow(
-      devtools, DEVTOOLS_TOGGLE_ACTION_INSPECT);
+      devtools, true, DEVTOOLS_TOGGLE_ACTION_INSPECT);
   host_count++;
   EXPECT_EQ(tab_count, browser()->tab_count());
   EXPECT_EQ(host_count, RenderProcessHostCount());
 }