Move Extension into extensions namespace

chrome/browser/ui/views/ash/launcher/launcher_app_icon_loader.h

Index: chrome/browser/ui/views/ash/launcher/launcher_app_icon_loader.h
diff --git a/chrome/browser/ui/views/ash/launcher/launcher_app_icon_loader.h b/chrome/browser/ui/views/ash/launcher/launcher_app_icon_loader.h
index 1740f5ae0602c92e729b3c303985ef5fd50fd8a1..ff26b42111165ad97db63769b6211292c3918252 100644
--- a/chrome/browser/ui/views/ash/launcher/launcher_app_icon_loader.h
+++ b/chrome/browser/ui/views/ash/launcher/launcher_app_icon_loader.h
@@ -13,9 +13,13 @@
 #include "chrome/browser/extensions/image_loading_tracker.h"
 #include "chrome/browser/ui/views/ash/launcher/chrome_launcher_controller.h"
 
-class Extension;
 class Profile;
 
+namespace extensions {
+class Extension;
+}
+
+
 // Default implementation of LauncherUpdater::AppIconLoader that interacts
 // with the ExtensionService and ImageLoadingTracker to load images.
 class LauncherAppIconLoader : public ChromeLauncherController::AppIconLoader,
@@ -38,10 +42,10 @@ class LauncherAppIconLoader : public ChromeLauncherController::AppIconLoader,
   typedef std::map<int, std::string> ImageLoaderIDToExtensionIDMap;
 
   // Returns the extension for the specified tab.
-  const Extension* GetExtensionForTab(TabContentsWrapper* tab);
+  const extensions::Extension* GetExtensionForTab(TabContentsWrapper* tab);
 
   // Returns the extension by ID.
-  const Extension* GetExtensionByID(const std::string& id);
+  const extensions::Extension* GetExtensionByID(const std::string& id);
 
   Profile* profile_;