Move Extension into extensions namespace

chrome/browser/sync/test/integration/apps_helper.cc

Index: chrome/browser/sync/test/integration/apps_helper.cc
diff --git a/chrome/browser/sync/test/integration/apps_helper.cc b/chrome/browser/sync/test/integration/apps_helper.cc
index dea553d2b8bfecf4cb79f7b3a6d2503c194ba9dd..a73c17d53b9b00c8d82bc3d9931e8106e70f4919 100644
--- a/chrome/browser/sync/test/integration/apps_helper.cc
+++ b/chrome/browser/sync/test/integration/apps_helper.cc
@@ -42,7 +42,9 @@ bool AllProfilesHaveSameAppsAsVerifier() {
 
 std::string InstallApp(Profile* profile, int index) {
   return SyncExtensionHelper::GetInstance()->InstallExtension(
-      profile, CreateFakeAppName(index), Extension::TYPE_HOSTED_APP);
+      profile,
+      CreateFakeAppName(index),
+      extensions::Extension::TYPE_HOSTED_APP);
 }
 
 std::string InstallAppForAllProfiles(int index) {
@@ -78,7 +80,7 @@ void IncognitoDisableApp(Profile* profile, int index) {
 
 void InstallAppsPendingForSync(Profile* profile) {
   SyncExtensionHelper::GetInstance()->InstallExtensionsPendingForSync(
-      profile, Extension::TYPE_HOSTED_APP);
+      profile, extensions::Extension::TYPE_HOSTED_APP);
 }
 
 StringOrdinal GetPageOrdinalForApp(Profile* profile,