Headless: Move GetUntrustedDevToolsFrameIdForFrameTreeNodeId to public

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 3ea0c7887f3b637c245678c828b60b3ef5032205..fbbffd10aa7fb859b86476a5ddc0905a04ebc53f 100644
--- a/headless/lib/browser/headless_web_contents_impl.h
+++ b/headless/lib/browser/headless_web_contents_impl.h
@@ -60,6 +60,10 @@ class HEADLESS_EXPORT HeadlessWebContentsImpl
   bool GetFrameTreeNodeIdForDevToolsAgentHostId(
       const std::string& devtools_agent_host_id,
       int* frame_tree_node_id) const override;
+  std::string GetUntrustedDevToolsFrameIdForFrameTreeNodeId(
+      int process_id,
+      int frame_tree_node_id) const override;
+  int GetMainFrameRenderProcessId() const override;
 
   // HeadlessDevToolsTarget implementation:
   bool AttachClient(HeadlessDevToolsClient* client) override;
@@ -100,14 +104,6 @@ class HEADLESS_EXPORT HeadlessWebContentsImpl
     return window_tree_host_.get();
   }
 
-  // Returns the devtools frame id corresponding to the |frame_tree_node_id|, if
-  // any.  Note this relies on an IPC sent from blink during navigation.
-  std::string GetUntrustedDevToolsFrameIdForFrameTreeNodeId(
-      int process_id,
-      int frame_tree_node_id) const;
-
-  int GetMainFrameRenderProcessId() const;
-
  private:
   // Takes ownership of |web_contents|.
   HeadlessWebContentsImpl(content::WebContents* web_contents,