Move Extension into extensions namespace

chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h

Index: chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h
diff --git a/chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h b/chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h
index 8904fa8378a7f79d0adb1a6f83edac36c79df1ad..addb655dcb1793fb2a4f562d42614a8cb50dc679 100644
--- a/chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h
+++ b/chrome/browser/ui/cocoa/extensions/extension_action_context_menu.h
@@ -12,10 +12,13 @@
 #include "base/memory/scoped_ptr.h"
 
 class AsyncUninstaller;
-class Extension;
 class ExtensionAction;
 class Profile;
 
+namespace extensions {
+class Extension;
+}
+
 namespace extension_action_context_menu {
 
 }  // namespace extension_action_context_menu
@@ -24,7 +27,7 @@ namespace extension_action_context_menu {
 @interface ExtensionActionContextMenu : NSMenu {
  @private
   // The extension that this menu belongs to. Weak.
-  const Extension* extension_;
+  const extensions::Extension* extension_;
 
   // The extension action this menu belongs to. Weak.
   ExtensionAction* action_;
@@ -38,7 +41,7 @@ namespace extension_action_context_menu {
 }
 
 // Initializes and returns a context menu for the given extension and profile.
-- (id)initWithExtension:(const Extension*)extension
+- (id)initWithExtension:(const extensions::Extension*)extension
                 profile:(Profile*)profile
         extensionAction:(ExtensionAction*)action;