[DevTools] Expose DevToolsAgentHost for OOPIF, display it in chrome://inspect.

content/public/browser/devtools_agent_host.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_AGENT_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_DEVTOOLS_AGENT_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 11 matching lines @@
 class WebContents;
 
 // Describes interface for managing devtools agents from browser process.
 class CONTENT_EXPORT DevToolsAgentHost
     : public base::RefCounted<DevToolsAgentHost> {
  public:
   enum Type {
     // Agent host associated with WebContents.
     TYPE_WEB_CONTENTS,
 
+    // Agent host associated with RenderFrameHost.
+    TYPE_FRAME,
+
     // Agent host associated with shared worker.
     TYPE_SHARED_WORKER,
 
     // Agent host associated with service worker.
     TYPE_SERVICE_WORKER,
 
     // Agent host associated with DevToolsExternalAgentProxyDelegate.
     TYPE_EXTERNAL,
   };
 
@@ skipping 86 matching lines @@
   static void RemoveAgentStateCallback(const AgentStateCallback& callback);
 
  protected:
   friend class base::RefCounted<DevToolsAgentHost>;
   virtual ~DevToolsAgentHost() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DEVTOOLS_AGENT_HOST_H_