DevTools: [remote debugging] introduce json/new and json/close for creating and closing the tabs.

content/public/browser/devtools_http_handler_delegate.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_DEVTOOLS_HTTP_HANDLER_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_DEVTOOLS_HTTP_HANDLER_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
 
 class GURL;
 
 namespace content {
 
-class WebContents;
+class RenderViewHost;
 
 class DevToolsHttpHandlerDelegate {
  public:
   virtual ~DevToolsHttpHandlerDelegate() {}
 
   // Should return discovery page HTML that should list available tabs
   // and provide attach links. Called on the IO thread.
   virtual std::string GetDiscoveryPageHTML() = 0;
 
   // Returns true if and only if frontend resources are bundled.
   virtual bool BundlesFrontendResources() = 0;
 
   // Returns path to the front-end files on the local filesystem for debugging.
   virtual FilePath GetDebugFrontendDir() = 0;
 
   // Get a thumbnail for a given page. Returns non-empty string iff we have the
   // thumbnail.
   virtual std::string GetPageThumbnailData(const GURL& url) = 0;
+
+  // Creates new inspectable target and returns its render view host.
+  virtual RenderViewHost* CreateNewTarget() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DEVTOOLS_HTTP_HANDLER_DELEGATE_H_