Remove BrowserPlugin's -internal-attach method

chrome/browser/guest_view/web_view/web_view_guest.cc

Index: chrome/browser/guest_view/web_view/web_view_guest.cc
diff --git a/chrome/browser/guest_view/web_view/web_view_guest.cc b/chrome/browser/guest_view/web_view/web_view_guest.cc
index 88ff3ddf68abd3f61e9924c69d4e2d4694192a88..306e9c6b82202ce9dbf38a19e4aefcd79bea4389 100644
--- a/chrome/browser/guest_view/web_view/web_view_guest.cc
+++ b/chrome/browser/guest_view/web_view/web_view_guest.cc
@@ -298,7 +298,7 @@ void WebViewGuest::CreateWebContents(
 
 void WebViewGuest::DidAttachToEmbedder() {
   std::string name;
-  if (extra_params()->GetString(webview::kName, &name)) {
+  if (attach_params()->GetString(webview::kName, &name)) {
     // If the guest window's name is empty, then the WebView tag's name is
     // assigned. Otherwise, the guest window's name takes precedence over the
     // WebView tag's name.
@@ -308,15 +308,15 @@ void WebViewGuest::DidAttachToEmbedder() {
   ReportFrameNameChange(name_);
 
   std::string user_agent_override;
-  if (extra_params()->GetString(webview::kParameterUserAgentOverride,
-                                &user_agent_override)) {
+  if (attach_params()->GetString(webview::kParameterUserAgentOverride,
+                                 &user_agent_override)) {
     SetUserAgentOverride(user_agent_override);
   } else {
     SetUserAgentOverride("");
   }
 
   std::string src;
-  if (extra_params()->GetString("src", &src) && !src.empty())
+  if (attach_params()->GetString("src", &src) && !src.empty())
     NavigateGuest(src);
 
   if (GetOpener()) {