Remove BrowserPlugin's -internal-attach method

chrome/browser/guest_view/guest_view_base.cc

Index: chrome/browser/guest_view/guest_view_base.cc
diff --git a/chrome/browser/guest_view/guest_view_base.cc b/chrome/browser/guest_view/guest_view_base.cc
index 5e4ebab8e8250d3ab47342e678db1eac084268b5..1e9634030f9aa33735eccebc3387aacea7ec2cb9 100644
--- a/chrome/browser/guest_view/guest_view_base.cc
+++ b/chrome/browser/guest_view/guest_view_base.cc
@@ -272,6 +272,12 @@ int GuestViewBase::GetGuestInstanceID() const {
   return guest_instance_id_;
 }
 
+void GuestViewBase::SetAttachParams(const base::DictionaryValue& params) {
+  attach_params_.reset(params.DeepCopy());
+  attach_params_->GetInteger(guestview::kParameterInstanceId,
+                             &view_instance_id_);
+}
+
 void GuestViewBase::SetOpener(GuestViewBase* guest) {
   if (guest && guest->IsViewType(GetViewType())) {
     opener_ = guest->AsWeakPtr();
@@ -285,8 +291,7 @@ void GuestViewBase::RegisterDestructionCallback(
   destruction_callback_ = callback;
 }
 
-void GuestViewBase::WillAttach(content::WebContents* embedder_web_contents,
-                               const base::DictionaryValue& extra_params) {
+void GuestViewBase::WillAttach(content::WebContents* embedder_web_contents) {
   // After attachment, this GuestViewBase's lifetime is restricted to the
   // lifetime of its embedder WebContents. Observing the RenderProcessHost
   // of the embedder is no longer necessary.
@@ -294,8 +299,6 @@ void GuestViewBase::WillAttach(content::WebContents* embedder_web_contents,
   embedder_web_contents_ = embedder_web_contents;
   embedder_web_contents_observer_.reset(
       new EmbedderWebContentsObserver(this));
-  extra_params.GetInteger(guestview::kParameterInstanceId, &view_instance_id_);
-  extra_params_.reset(extra_params.DeepCopy());
 
   WillAttachToEmbedder();
 }