Headless: Support sending and receiving of raw protocol messages

headless/lib/browser/headless_web_contents_impl.h

Index: headless/lib/browser/headless_web_contents_impl.h
diff --git a/headless/lib/browser/headless_web_contents_impl.h b/headless/lib/browser/headless_web_contents_impl.h
index 3d6377dea989d578ed1636543d8b92c96367d99a..1dd6c6d6eb6ef03b0bea48312551ea0d565cf575 100644
--- a/headless/lib/browser/headless_web_contents_impl.h
+++ b/headless/lib/browser/headless_web_contents_impl.h
@@ -55,6 +55,9 @@ class HEADLESS_EXPORT HeadlessWebContentsImpl
   void RemoveObserver(Observer* observer) override;
   HeadlessDevToolsTarget* GetDevToolsTarget() override;
   HeadlessTabSocket* GetHeadlessTabSocket() const override;
+  bool GetFrameTreeNodeIdForDevToolsAgentHostId(
+      const std::string& devtools_agent_host_id,
+      int* frame_tree_node_id) const override;
 
   // HeadlessDevToolsTarget implementation:
   bool AttachClient(HeadlessDevToolsClient* client) override;
@@ -70,6 +73,7 @@ class HEADLESS_EXPORT HeadlessWebContentsImpl
 
   // content::WebContentsObserver implementation:
   void RenderFrameCreated(content::RenderFrameHost* render_frame_host) override;
+  void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
 
   content::WebContents* web_contents() const;
   bool OpenURL(const GURL& url);
@@ -96,6 +100,10 @@ class HEADLESS_EXPORT HeadlessWebContentsImpl
   void InitializeScreen(const gfx::Size& initial_size);
   using MojoService = HeadlessWebContents::Builder::MojoService;
 
+  std::unordered_map<content::RenderFrameHost*, std::string>
+      render_frame_host_to_devtools_agent_host_id_;
+  std::unordered_map<std::string, int> devtools_agent_id_to_frame_tree_node_id_;
+
   class Delegate;
   std::unique_ptr<Delegate> web_contents_delegate_;
   std::unique_ptr<HeadlessWindowTreeHost> window_tree_host_;