Move PendingExtensionManager and PendingExtensionInfo into extensions namespace

chrome/browser/extensions/pending_extension_manager.cc

Index: chrome/browser/extensions/pending_extension_manager.cc
diff --git a/chrome/browser/extensions/pending_extension_manager.cc b/chrome/browser/extensions/pending_extension_manager.cc
index f1fbc59320b97748e6e555b85e3b1427345c20ad..130f11bcf75fce4a170894742ea2e49fde0ef9b8 100644
--- a/chrome/browser/extensions/pending_extension_manager.cc
+++ b/chrome/browser/extensions/pending_extension_manager.cc
@@ -15,17 +15,18 @@
 #include <algorithm>
 
 using content::BrowserThread;
-using extensions::Extension;
 
 namespace {
 
 // Install predicate used by AddFromExternalUpdateUrl().
-bool AlwaysInstall(const Extension& extension) {
+bool AlwaysInstall(const extensions::Extension& extension) {
   return true;
 }
 
 }  // namespace
 
+namespace extensions {
+
 PendingExtensionManager::PendingExtensionManager(
     const ExtensionServiceInterface& service)
     : service_(service) {
@@ -242,3 +243,5 @@ void PendingExtensionManager::AddForTesting(
     const PendingExtensionInfo& pending_extension_info) {
   pending_extension_list_.push_back(pending_extension_info);
 }
+
+}  // namespace extensions