Switch ScriptBadgeController and PageActionController to use WebContents.

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm

Index: chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
diff --git a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
index 89be89dfd6ddffbb95db335ecef3c73a8400743b..cc608b20f22477e7321b63bb5d107f0f27719b3e 100644
--- a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
+++ b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
@@ -560,8 +560,8 @@ void LocationBarViewMac::Observe(int 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;
     }