Revert of Require WebLocalFrame to be created with a non-null client

components/plugins/renderer/webview_plugin.h

Index: components/plugins/renderer/webview_plugin.h
diff --git a/components/plugins/renderer/webview_plugin.h b/components/plugins/renderer/webview_plugin.h
index 086fa6db3a1a793519d762c32f7d36376d99a2fb..f351ff19e7c5bc463e93e17d6a89e701d65d7441 100644
--- a/components/plugins/renderer/webview_plugin.h
+++ b/components/plugins/renderer/webview_plugin.h
@@ -154,6 +154,11 @@
   // Owned by us, deleted via |close()|.
   blink::WebView* web_view_;
 
+  // Owned by us, deleted via |close()|.
+  blink::WebFrameWidget* web_frame_widget_;
+
+  // Owned by us, deleted via |close()|.
+  blink::WebFrame* web_frame_;
   gfx::Rect rect_;
 
   blink::WebString old_title_;