Remove BrowserPlugin's -internal-attach method

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 30d405fe6e5f4ff5944f0ff7a2dbf80b3ee3ba32..987b32971571ddc5d3badf32d72eb6500bff857f 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1447,6 +1447,12 @@ bool RenderFrameImpl::IsFTPDirectoryListing() {
   return extra_data ? extra_data->is_ftp_directory_listing() : false;
 }
 
+void RenderFrameImpl::AttachToBrowserPlugin(int browser_plugin_instance_id,
+                                            int guest_instance_id) {
+  render_view_->GetBrowserPluginManager()->Attach(browser_plugin_instance_id,
+                                                  guest_instance_id);
+}
+
 // blink::WebFrameClient implementation ----------------------------------------
 
 blink::WebPlugin* RenderFrameImpl::createPlugin(