Move Extension into extensions namespace

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

Index: chrome/browser/sync/test/integration/extensions_helper.cc
diff --git a/chrome/browser/sync/test/integration/extensions_helper.cc b/chrome/browser/sync/test/integration/extensions_helper.cc
index e6873b3aaea21eb7d82d5a12edef5bee66a5b7d8..66fd7898f3414906463890dda3ee5e51ebb9edf1 100644
--- a/chrome/browser/sync/test/integration/extensions_helper.cc
+++ b/chrome/browser/sync/test/integration/extensions_helper.cc
@@ -51,7 +51,9 @@ bool AllProfilesHaveSameExtensions() {
 
 std::string InstallExtension(Profile* profile, int index) {
   return SyncExtensionHelper::GetInstance()->InstallExtension(
-      profile, CreateFakeExtensionName(index), Extension::TYPE_EXTENSION);
+      profile,
+      CreateFakeExtensionName(index),
+      extensions::Extension::TYPE_EXTENSION);
 }
 
 std::string InstallExtensionForAllProfiles(int index) {
@@ -111,7 +113,7 @@ bool IsIncognitoEnabled(Profile* profile, int index) {
 
 void InstallExtensionsPendingForSync(Profile* profile) {
   SyncExtensionHelper::GetInstance()->InstallExtensionsPendingForSync(
-      profile, Extension::TYPE_EXTENSION);
+      profile, extensions::Extension::TYPE_EXTENSION);
 }
 
 std::string CreateFakeExtensionName(int index) {