Make content shell activate and focus dev tools on show.

content/shell/browser/shell_devtools_frontend.h

 // 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.
 
 #ifndef CONTENT_SHELL_BROWSER_SHELL_DEVTOOLS_FRONTEND_H_
 #define CONTENT_SHELL_BROWSER_SHELL_DEVTOOLS_FRONTEND_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/devtools_agent_host.h"
 #include "content/public/browser/devtools_client_host.h"
 #include "content/public/browser/devtools_frontend_host_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
 
 namespace content {
 
 class RenderViewHost;
 class Shell;
 class WebContents;
 
 class ShellDevToolsFrontend : public WebContentsObserver,
                               public DevToolsFrontendHostDelegate {
  public:
   static ShellDevToolsFrontend* Show(WebContents* inspected_contents);
+  void Activate();
   void Focus();
   void Close();
 
   Shell* frontend_shell() const { return frontend_shell_; }
 
  private:
   ShellDevToolsFrontend(Shell* frontend_shell, DevToolsAgentHost* agent_host);
   virtual ~ShellDevToolsFrontend();
 
   // WebContentsObserver overrides
   virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
   virtual void WebContentsDestroyed(WebContents* web_contents) OVERRIDE;
 
   // DevToolsFrontendHostDelegate implementation
   virtual void DispatchOnEmbedder(const std::string& message) OVERRIDE {}
 
   virtual void InspectedContentsClosing() OVERRIDE;
 
   Shell* frontend_shell_;
   scoped_refptr<DevToolsAgentHost> agent_host_;
   scoped_ptr<DevToolsClientHost> frontend_host_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellDevToolsFrontend);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_BROWSER_SHELL_DEVTOOLS_FRONTEND_H_