Convert app_launch_index and page_index from int to StringOrdinal.

chrome/browser/extensions/test_extension_prefs.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/test_extension_prefs.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 125 matching lines @@
   FilePath path =  extensions_dir_.AppendASCII(name);
   std::string errors;
   scoped_refptr<Extension> extension = Extension::Create(
       path, location, manifest, extra_flags, &errors);
   EXPECT_TRUE(extension) << errors;
   if (!extension)
     return NULL;
 
   EXPECT_TRUE(Extension::IdIsValid(extension->id()));
   prefs_->OnExtensionInstalled(extension, Extension::ENABLED,
-                               extra_flags & Extension::FROM_WEBSTORE, 0);
+                               extra_flags & Extension::FROM_WEBSTORE,
+                               StringOrdinal::CreateInitialOrdinal());
   return extension;
 }
 
 std::string TestExtensionPrefs::AddExtensionAndReturnId(std::string name) {
   scoped_refptr<Extension> extension(AddExtension(name));
   return extension->id();
 }
 
 PrefService* TestExtensionPrefs::CreateIncognitoPrefService() const {
   return pref_service_->CreateIncognitoPrefService(
       new ExtensionPrefStore(extension_pref_value_map_.get(), true));
 }
 
 void TestExtensionPrefs::set_extensions_disabled(bool extensions_disabled) {
   extensions_disabled_ = extensions_disabled;
 }