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

content/browser/devtools/devtools_agent_host_impl.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_BROWSER_DEVTOOLS_DEVTOOLS_AGENT_HOST_IMPL_H_
 #define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_AGENT_HOST_IMPL_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/devtools_agent_host.h"
 
 namespace IPC {
 class Message;
 }
 
 namespace content {
 
 class BrowserContext;
 
 // Describes interface for managing devtools agents from the browser process.
 class CONTENT_EXPORT DevToolsAgentHostImpl : public DevToolsAgentHost {
  public:
-  // Returns a list of all existing WebContents that can be debugged.
-  static std::vector<WebContents*> GetInspectableWebContents();
-
   // Informs the hosted agent that a client host has attached.
   virtual void Attach() = 0;
 
   // Informs the hosted agent that a client host has detached.
   virtual void Detach() = 0;
 
   // Sends a message to the agent.
   void DispatchProtocolMessage(const std::string& message) override = 0;
 
   // Opens the inspector for this host.
@@ skipping 22 matching lines @@
  private:
   friend class DevToolsAgentHost; // for static methods
 
   const std::string id_;
   DevToolsAgentHostClient* client_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_AGENT_HOST_IMPL_H_