Switch ScriptBadgeController and PageActionController to use WebContents.

chrome/browser/ui/gtk/location_bar_view_gtk.cc

Index: chrome/browser/ui/gtk/location_bar_view_gtk.cc
diff --git a/chrome/browser/ui/gtk/location_bar_view_gtk.cc b/chrome/browser/ui/gtk/location_bar_view_gtk.cc
index 821460f39a4db14f5c5d0747fd6351e5f0fde239..f3c72cc008676aa7ee18adc7bdf97237dd388417 100644
--- a/chrome/browser/ui/gtk/location_bar_view_gtk.cc
+++ b/chrome/browser/ui/gtk/location_bar_view_gtk.cc
@@ -1081,9 +1081,8 @@ void LocationBarViewGtk::Observe(int type,
   switch (type) {
     case chrome::NOTIFICATION_EXTENSION_LOCATION_BAR_UPDATED: {
       // Only update if the updated action box was for the active tab contents.
-      TabContents* target_tab =
-          content::Details<TabContents>(details).ptr();
-      if (target_tab == GetTabContents())
+      WebContents* target_tab = content::Details<WebContents>(details).ptr();
+      if (target_tab == GetTabContents()->web_contents())
         UpdatePageActions();
       break;
     }