NOT YET READY: Improve granularity of window namespaces in Blink.

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 55acb6a97a686c27dd831312c3cb23d7c175ab1e..592cf39c4c8000dfef6cc49db00c36b9a67e2176 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -1598,3 +1598,13 @@ ChromeContentRendererClient::GetTaskSchedulerInitParams() {
   return task_scheduler_util::
       GetRendererTaskSchedulerInitParamsFromCommandLine();
 }
+
+blink::WebFrame* ChromeContentRendererClient::FindFrame(
+    blink::WebLocalFrame* relative_to_frame,
+    const std::string& name) {
+#if BUILDFLAG(ENABLE_EXTENSIONS)
+  return ChromeExtensionsRendererClient::FindFrame(relative_to_frame, name);
+#else
+  return nullptr;
+#endif  // BUILDFLAG(ENABLE_EXTENSIONS)
+}