Move ExtensionCreator into extensions namespace

chrome/browser/extensions/pack_extension_job.h

Index: chrome/browser/extensions/pack_extension_job.h
diff --git a/chrome/browser/extensions/pack_extension_job.h b/chrome/browser/extensions/pack_extension_job.h
index f6b99d79db33c977fc4a42555b2800331a162283..be5e867d86ca2750751a70f4bced2166993fffc4 100644
--- a/chrome/browser/extensions/pack_extension_job.h
+++ b/chrome/browser/extensions/pack_extension_job.h
@@ -24,8 +24,9 @@ class PackExtensionJob : public base::RefCountedThreadSafe<PackExtensionJob> {
    public:
     virtual void OnPackSuccess(const FilePath& crx_file,
                                const FilePath& key_file) = 0;
-    virtual void OnPackFailure(const std::string& message,
-                               ExtensionCreator::ErrorType error_type) = 0;
+    virtual void OnPackFailure(
+        const std::string& message,
+        extensions::ExtensionCreator::ErrorType error_type) = 0;
 
    protected:
     virtual ~Client() {}
@@ -57,8 +58,9 @@ class PackExtensionJob : public base::RefCountedThreadSafe<PackExtensionJob> {
   // If |asynchronous_| is false, this is run on whichever thread calls it.
   void Run();
   void ReportSuccessOnClientThread();
-  void ReportFailureOnClientThread(const std::string& error,
-                                   ExtensionCreator::ErrorType error_type);
+  void ReportFailureOnClientThread(
+      const std::string& error,
+      extensions::ExtensionCreator::ErrorType error_type);
 
   content::BrowserThread::ID client_thread_id_;
   Client* client_;