Update more manifests to manifest_version 2

chrome/browser/extensions/extension_service_unittest.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/extension_service_unittest.h"
 
 #include <algorithm>
 #include <set>
 #include <vector>
 
@@ skipping 2150 matching lines @@
   // We'll write the extension manifest dynamically to a temporary path
   // to make it easier to change the version number.
   FilePath extension_path = temp.path();
   FilePath manifest_path = extension_path.Append(Extension::kManifestFilename);
   ASSERT_FALSE(file_util::PathExists(manifest_path));
 
   // Start with version 2.0.
   DictionaryValue manifest;
   manifest.SetString("version", "2.0");
   manifest.SetString("name", "LOAD Downgrade Test");
+  manifest.SetInteger("manifest_version", 2);
 
   JSONFileValueSerializer serializer(manifest_path);
   ASSERT_TRUE(serializer.Serialize(manifest));
 
   extensions::UnpackedInstaller::Create(service_)->Load(extension_path);
   loop_.RunAllPending();
 
   EXPECT_EQ(0u, GetErrors().size());
   ASSERT_EQ(1u, loaded_.size());
   EXPECT_EQ(Extension::LOAD, loaded_[0]->location());
@@ skipping 2109 matching lines @@
   ASSERT_FALSE(AddPendingSyncInstall());
 
   // Wait for the external source to install.
   WaitForCrxInstall(crx_path_, INSTALL_NEW);
   ASSERT_TRUE(IsCrxInstalled());
 
   // Now that the extension is installed, sync request should fail
   // because the extension is already installed.
   ASSERT_FALSE(AddPendingSyncInstall());
 }