Move Extension into extensions namespace

chrome/browser/ui/views/location_bar/page_action_image_view.cc

Index: chrome/browser/ui/views/location_bar/page_action_image_view.cc
diff --git a/chrome/browser/ui/views/location_bar/page_action_image_view.cc b/chrome/browser/ui/views/location_bar/page_action_image_view.cc
index 5877e023ca1a9bd54d687c0208bcfa7b3b4dc945..ca545b51cb278a1d186a53f5497db8795a93fa76 100644
--- a/chrome/browser/ui/views/location_bar/page_action_image_view.cc
+++ b/chrome/browser/ui/views/location_bar/page_action_image_view.cc
@@ -29,6 +29,7 @@
 #include "ui/views/controls/menu/menu_runner.h"
 
 using content::WebContents;
+using extensions::Extension;
 
 PageActionImageView::PageActionImageView(LocationBarView* owner,
                                          ExtensionAction* page_action,
@@ -272,7 +273,7 @@ void PageActionImageView::Observe(int type,
                                   const content::NotificationDetails& details) {
   DCHECK_EQ(chrome::NOTIFICATION_EXTENSION_UNLOADED, type);
   const Extension* unloaded_extension =
-      content::Details<UnloadedExtensionInfo>(details)->extension;
+      content::Details<extensions::UnloadedExtensionInfo>(details)->extension;
   if (page_action_ == unloaded_extension ->page_action())
     owner_->UpdatePageActions();
 }