Pipe the devTools FrameId from blink into the browser for headless

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 <memory>
 #include <string>
 #include <vector>
@@ skipping 34 matching lines @@
   static char kTypeExternal[];
   static char kTypeBrowser[];
   static char kTypeOther[];
 
   // Latest DevTools protocol version supported.
   static std::string GetProtocolVersion();
 
   // Returns whether particular version of DevTools protocol is supported.
   static bool IsSupportedProtocolVersion(const std::string& version);
 
+  // Returns the DevTools FrameId for the given |frame_tree_node_id|.
+  static std::string GetDevToolsFrameIdForFrameTreeNodeId(
+      int frame_tree_node_id);
+
   // Returns DevToolsAgentHost with a given |id| or nullptr of it doesn't exist.
   static scoped_refptr<DevToolsAgentHost> GetForId(const std::string& id);
 
   // Returns DevToolsAgentHost that can be used for inspecting |web_contents|.
   // A new DevToolsAgentHost will be created if it does not exist.
   static scoped_refptr<DevToolsAgentHost> GetOrCreateFor(
       WebContents* web_contents);
 
   // Returns DevToolsAgentHost that can be used for inspecting |frame_host|.
   // A new DevToolsAgentHost will be created if it does not exist.
@@ skipping 145 matching lines @@
   static void DetachAllClients();
 
  protected:
   friend class base::RefCounted<DevToolsAgentHost>;
   virtual ~DevToolsAgentHost() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DEVTOOLS_AGENT_HOST_H_