Move Extension into extensions namespace

chrome/browser/ui/webui/extensions/extension_settings_handler.h

Index: chrome/browser/ui/webui/extensions/extension_settings_handler.h
diff --git a/chrome/browser/ui/webui/extensions/extension_settings_handler.h b/chrome/browser/ui/webui/extensions/extension_settings_handler.h
index fb2219242c04014f1cec46a633a484d4469b74dd..ff6804c557dbde5ee458b2ffb49d5b83a936147d 100644
--- a/chrome/browser/ui/webui/extensions/extension_settings_handler.h
+++ b/chrome/browser/ui/webui/extensions/extension_settings_handler.h
@@ -25,7 +25,6 @@
 #include "content/public/browser/web_ui_message_handler.h"
 #include "googleurl/src/gurl.h"
 
-class Extension;
 class ExtensionHost;
 class ExtensionService;
 class FilePath;
@@ -36,6 +35,10 @@ class DictionaryValue;
 class ListValue;
 }
 
+namespace extensions {
+class Extension;
+}
+
 // Information about a page running in an extension, for example a popup bubble,
 // a background page, or a tab contents.
 struct ExtensionPage {
@@ -67,7 +70,7 @@ class ExtensionSettingsHandler : public content::WebUIMessageHandler,
   // testing.
   // Note: |warning_set| can be NULL in unit tests.
   base::DictionaryValue* CreateExtensionDetailValue(
-      const Extension* extension,
+      const extensions::Extension* extension,
       const std::vector<ExtensionPage>& pages,
       const ExtensionWarningSet* warning_set);
 
@@ -144,7 +147,7 @@ class ExtensionSettingsHandler : public content::WebUIMessageHandler,
 
   // Utility for callbacks that get an extension ID as the sole argument.
   // Returns NULL if the extension isn't active.
-  const Extension* GetActiveExtension(const base::ListValue* args);
+  const extensions::Extension* GetActiveExtension(const base::ListValue* args);
 
   // Forces a UI update if appropriate after a notification is received.
   void MaybeUpdateAfterNotification();
@@ -154,7 +157,7 @@ class ExtensionSettingsHandler : public content::WebUIMessageHandler,
 
   // Helper that lists the current inspectable html pages for an extension.
   std::vector<ExtensionPage> GetInspectablePagesForExtension(
-      const Extension* extension, bool extension_is_enabled);
+      const extensions::Extension* extension, bool extension_is_enabled);
   void GetInspectablePagesForExtensionProcess(
       const std::set<content::RenderViewHost*>& views,
       std::vector<ExtensionPage> *result);