[DevTools] Fix out of process iframes not working on chrome://inspect.

chrome/browser/devtools/chrome_devtools_manager_delegate.cc

Index: chrome/browser/devtools/chrome_devtools_manager_delegate.cc
diff --git a/chrome/browser/devtools/chrome_devtools_manager_delegate.cc b/chrome/browser/devtools/chrome_devtools_manager_delegate.cc
index ca4fed2e81df264cb9e1149708346717071ddb31..712a58b4aa337a47426297e215e5eb116643f872 100644
--- a/chrome/browser/devtools/chrome_devtools_manager_delegate.cc
+++ b/chrome/browser/devtools/chrome_devtools_manager_delegate.cc
@@ -49,6 +49,10 @@ void ChromeDevToolsManagerDelegate::Inspect(
     DevToolsWindow::OpenDevToolsWindowForWorker(profile, agent_host);
     return;
   }
+  if (type == content::DevToolsAgentHost::kTypeFrame) {
+    DevToolsWindow::OpenDevToolsWindow(profile, agent_host);
+    return;
+  }
   content::WebContents* web_contents = agent_host->GetWebContents();
   if (web_contents)
     DevToolsWindow::OpenDevToolsWindow(web_contents);