[autofill] Hook the sign-in button up to required actions.

chrome/browser/ui/views/autofill/autofill_dialog_views.cc

Index: chrome/browser/ui/views/autofill/autofill_dialog_views.cc
diff --git a/chrome/browser/ui/views/autofill/autofill_dialog_views.cc b/chrome/browser/ui/views/autofill/autofill_dialog_views.cc
index 319bea00e3af89d8f7586b8c7a630b8af3f7ae66..09ae94f8f9a96c18dfcd0afcec58e4e007b0f382 100644
--- a/chrome/browser/ui/views/autofill/autofill_dialog_views.cc
+++ b/chrome/browser/ui/views/autofill/autofill_dialog_views.cc
@@ -305,6 +305,7 @@ AutofillDialogViews::~AutofillDialogViews() {
 
 void AutofillDialogViews::Show() {
   InitChildViews();
+  UpdateAccountChooser();
   UpdateNotificationArea();
 
   // Ownership of |contents_| is handed off by this call. The
@@ -601,12 +602,21 @@ views::View* AutofillDialogViews::CreateNotificationArea() {
   notification_label_->SetAutoColorReadabilityEnabled(false);
   notification_label_->SetMultiLine(true);
   notification_label_->set_collapse_when_hidden(true);
+  notification_label_->set_border(
+      views::Border::CreateEmptyBorder(10, 0, 10, 0));
+  // TODO(dbeam): talk to msw@ or ainslie@ to make this border match the mocks.
 
   notification_area->AddChildView(notification_label_);
 
   return notification_area;
 }
 
+void AutofillDialogViews::UpdateAccountChooser() {
+  DialogSignedInState state = controller_->SignedIn();
+  sign_in_link_->SetEnabled(state != REQUIRES_RESPONSE);
+  sign_in_link_->SetVisible(state != SIGNED_IN);
+}
+
 void AutofillDialogViews::UpdateNotificationArea() {
   DCHECK(notification_label_);