This patch improves the way that GuestViewManager tracks the destruction of GuestView embedders.

components/guest_view/browser/guest_view_base.h

Index: components/guest_view/browser/guest_view_base.h
diff --git a/components/guest_view/browser/guest_view_base.h b/components/guest_view/browser/guest_view_base.h
index 6a529806416ea86a7c3ed73c4e8c58f830dd8baf..2e7862d71dcfa4062f766b44dcc390e4d6526adc 100644
--- a/components/guest_view/browser/guest_view_base.h
+++ b/components/guest_view/browser/guest_view_base.h
@@ -65,7 +65,9 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
   // potentially be created and destroyed in JavaScript before getting a
   // GuestViewBase instance. This method can be hidden by a CleanUp() method in
   // a derived class, in which case the derived method should call this one.
-  static void CleanUp(int embedder_process_id, int view_instance_id);
+  static void CleanUp(content::BrowserContext* browser_context,
+                      int embedder_process_id,
+                      int view_instance_id);
 
   static GuestViewBase* FromWebContents(
       const content::WebContents* web_contents);