Make content shell activate and focus dev tools on show.

content/shell/browser/shell_devtools_frontend.cc

 // Copyright 2013 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 "content/shell/browser/shell_devtools_frontend.h"
 
 #include "base/command_line.h"
 #include "base/path_service.h"
 #include "content/public/browser/devtools_http_handler.h"
 #include "content/public/browser/devtools_manager.h"
@@ skipping 45 matching lines @@
       DevToolsAgentHost::GetOrCreateFor(inspected_contents->GetRenderViewHost())
           .get());
 
   ShellDevToolsDelegate* delegate = ShellContentBrowserClient::Get()->
       shell_browser_main_parts()->devtools_delegate();
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDumpRenderTree))
     shell->LoadURL(GetDevToolsPathAsURL());
   else
     shell->LoadURL(delegate->devtools_http_handler()->GetFrontendURL());
 
+  devtools_frontend->Activate();
+  devtools_frontend->Focus();
+
   return devtools_frontend;
 }
 
+void ShellDevToolsFrontend::Activate() {
+  frontend_shell_->ActivateContents(web_contents());
+}
+
 void ShellDevToolsFrontend::Focus() {
   web_contents()->GetView()->Focus();
 }
 
 void ShellDevToolsFrontend::Close() {
   frontend_shell_->Close();
 }
 
 ShellDevToolsFrontend::ShellDevToolsFrontend(Shell* frontend_shell,
                                              DevToolsAgentHost* agent_host)
@@ skipping 19 matching lines @@
 void ShellDevToolsFrontend::WebContentsDestroyed(WebContents* web_contents) {
   DevToolsManager::GetInstance()->ClientHostClosing(frontend_host_.get());
   delete this;
 }
 
 void ShellDevToolsFrontend::InspectedContentsClosing() {
   frontend_shell_->Close();
 }
 
 }  // namespace content