Move WebstoreInstaller, WebstoreInlineInstaller, related in extensions namespace

chrome/browser/extensions/webstore_installer.h

Index: chrome/browser/extensions/webstore_installer.h
diff --git a/chrome/browser/extensions/webstore_installer.h b/chrome/browser/extensions/webstore_installer.h
index 0c7373b63fc497521b809e2e9b83826cae1bc25f..8d2ebb1100df00944cbd31c221b4e6797b744754 100644
--- a/chrome/browser/extensions/webstore_installer.h
+++ b/chrome/browser/extensions/webstore_installer.h
@@ -26,6 +26,8 @@ namespace content {
 class NavigationController;
 }
 
+namespace extensions {
+
 // Downloads and installs extensions from the web store.
 class WebstoreInstaller : public content::NotificationObserver,
                           public content::DownloadItem::Observer,
@@ -159,4 +161,6 @@ class WebstoreInstaller : public content::NotificationObserver,
   GURL download_url_;
 };
 
+}  // namespace extensions
+
 #endif  // CHROME_BROWSER_EXTENSIONS_WEBSTORE_INSTALLER_H_