Move WebstoreInstaller, WebstoreInlineInstaller, related in extensions namespace

BUG=136833, 117261


Review URL: https://chromiumcodereview.appspot.com/10703142

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@146407 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/webstore_inline_installer.cc b/chrome/browser/extensions/webstore_inline_installer.cc
index 551be76..09c7f40 100644
--- a/chrome/browser/extensions/webstore_inline_installer.cc
+++ b/chrome/browser/extensions/webstore_inline_installer.cc
@@ -34,6 +34,8 @@
 using content::UtilityProcessHostClient;
 using content::WebContents;
 
+namespace extensions {
+
 const char kManifestKey[] = "manifest";
 const char kIconUrlKey[] = "icon_url";
 const char kLocalizedNameKey[] = "localized_name";
@@ -164,7 +166,7 @@
 void WebstoreInlineInstaller::BeginInstall() {
   AddRef(); // Balanced in CompleteInstall or WebContentsDestroyed.
 
-  if (!extensions::Extension::IdIsValid(id_)) {
+  if (!Extension::IdIsValid(id_)) {
     CompleteInstall(kInvalidWebstoreItemId);
     return;
   }
@@ -455,3 +457,5 @@
 
   return verified_site_pattern.MatchesURL(requestor_url);
 }
+
+}  // namespace extensions