[DevTools] Pass client initiating DevToolsAgentHost::inspectElement.

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 <memory>
 
 #include "base/compiler_specific.h"
@@ skipping 55 matching lines @@
 
   // net::URLFetcherDelegate overrides.
   void OnURLFetchComplete(const net::URLFetcher* source) override;
 
   void SendMessageAck(int request_id,
                       const base::Value* arg1);
 
   Shell* frontend_shell_;
   WebContents* inspected_contents_;
   scoped_refptr<DevToolsAgentHost> agent_host_;
+  int inspect_element_at_x_;
+  int inspect_element_at_y_;
   std::unique_ptr<DevToolsFrontendHost> frontend_host_;
   using PendingRequestsMap = std::map<const net::URLFetcher*, int>;
   PendingRequestsMap pending_requests_;
   base::DictionaryValue preferences_;
   base::WeakPtrFactory<ShellDevToolsFrontend> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellDevToolsFrontend);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_BROWSER_SHELL_DEVTOOLS_FRONTEND_H_