Validate hash_sha256 checksum on .crx update.

chrome/browser/extensions/test_extension_service.cc

 // Copyright (c) 2012 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/crx_installer.h"
 #include "chrome/browser/extensions/test_extension_service.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using extensions::Extension;
 
 TestExtensionService::~TestExtensionService() {}
 
 extensions::PendingExtensionManager*
 TestExtensionService::pending_extension_manager() {
   ADD_FAILURE();
   return NULL;
 }
 
 bool TestExtensionService::UpdateExtension(
     const std::string& id,
     const base::FilePath& path,
     bool file_ownership_passed,
     extensions::CrxInstaller** out_crx_installer) {
   ADD_FAILURE();
   return false;
 }
 
+bool TestExtensionService::CheckAndUpdateExtension(
+    const std::string& id,
+    const base::FilePath& path,
+    const std::string& hash,
+    bool file_ownership_passed,
+    extensions::CrxInstaller** out_crx_installer) {
+  ADD_FAILURE();
+  return false;
+}
+
 const Extension* TestExtensionService::GetExtensionById(
     const std::string& id, bool include_disabled) const {
   ADD_FAILURE();
   return NULL;
 }
 
 const Extension* TestExtensionService::GetInstalledExtension(
     const std::string& id) const {
   ADD_FAILURE();
   return NULL;
@@ skipping 45 matching lines @@
 void TestExtensionService::UnloadExtension(
     const std::string& extension_id,
     extensions::UnloadedExtensionInfo::Reason reason) {
   ADD_FAILURE();
 }
 
 void TestExtensionService::RemoveComponentExtension(
     const std::string& extension_id) {
   ADD_FAILURE();
 }