Move Extension into extensions namespace

chrome/utility/chrome_content_utility_client.cc

Index: chrome/utility/chrome_content_utility_client.cc
diff --git a/chrome/utility/chrome_content_utility_client.cc b/chrome/utility/chrome_content_utility_client.cc
index ade6bd76bedf42fb46b1643858833589297c2852..7bccbfcaabbab861b2822b5f698568bf2723f3d8 100644
--- a/chrome/utility/chrome_content_utility_client.cc
+++ b/chrome/utility/chrome_content_utility_client.cc
@@ -102,12 +102,12 @@ void ChromeContentUtilityClient::OnUnpackExtension(
     const std::string& extension_id,
     int location,
     int creation_flags) {
-  CHECK(location > Extension::INVALID);
-  CHECK(location < Extension::NUM_LOCATIONS);
+  CHECK(location > extensions::Extension::INVALID);
+  CHECK(location < extensions::Extension::NUM_LOCATIONS);
   ExtensionUnpacker unpacker(
       extension_path,
       extension_id,
-      static_cast<Extension::Location>(location),
+      static_cast<extensions::Extension::Location>(location),
       creation_flags);
   if (unpacker.Run() && unpacker.DumpImagesToFile() &&
       unpacker.DumpMessageCatalogsToFile()) {