Remove lots of old blur plumbing.

components/guest_view/browser/guest_view_base.cc

Index: components/guest_view/browser/guest_view_base.cc
diff --git a/components/guest_view/browser/guest_view_base.cc b/components/guest_view/browser/guest_view_base.cc
index c6172cb6ab131b814b2cb335ba69caed2b8ad628..063850e6ed8784cf088798f7674298a13ea1bf46 100644
--- a/components/guest_view/browser/guest_view_base.cc
+++ b/components/guest_view/browser/guest_view_base.cc
@@ -589,14 +589,6 @@ void GuestViewBase::ActivateContents(WebContents* web_contents) {
       embedder_web_contents());
 }
 
-void GuestViewBase::DeactivateContents(WebContents* web_contents) {
-  if (!attached() || !embedder_web_contents()->GetDelegate())
-    return;
-
-  embedder_web_contents()->GetDelegate()->DeactivateContents(
-      embedder_web_contents());
-}
-
 void GuestViewBase::ContentsMouseEvent(WebContents* source,
                                        const gfx::Point& location,
                                        bool motion) {