Add extensions code to use common updater in components/update_client/

extensions/browser/test_extensions_browser_client.cc

 // Copyright 2014 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 "extensions/browser/test_extensions_browser_client.h"
 
 #include "base/values.h"
 #include "content/public/browser/browser_context.h"
 #include "extensions/browser/extension_host_delegate.h"
 #include "extensions/browser/test_runtime_api_delegate.h"
 #include "extensions/browser/updater/null_extension_cache.h"
 
 using content::BrowserContext;
 
 namespace extensions {
 
 TestExtensionsBrowserClient::TestExtensionsBrowserClient(
     BrowserContext* main_context)
     : main_context_(main_context),
       incognito_context_(NULL),
       process_manager_delegate_(NULL),
       extension_system_factory_(NULL),
       extension_cache_(new NullExtensionCache) {
   DCHECK(main_context_);
   DCHECK(!main_context_->IsOffTheRecord());
 }
 
 TestExtensionsBrowserClient::~TestExtensionsBrowserClient() {}
 
+void TestExtensionsBrowserClient::SetUpdateClientFactory(
+    const base::Callback<update_client::UpdateClient*(void)>& factory) {
+  update_client_factory_ = factory;
+}
+
 void TestExtensionsBrowserClient::SetIncognitoContext(BrowserContext* context) {
   // If a context is provided it must be off-the-record.
   DCHECK(!context || context->IsOffTheRecord());
   incognito_context_ = context;
 }
 
 bool TestExtensionsBrowserClient::IsShuttingDown() { return false; }
 
 bool TestExtensionsBrowserClient::AreExtensionsDisabled(
     const base::CommandLine& command_line,
@@ skipping 157 matching lines @@
     const std::string& min_version) {
   return true;
 }
 
 ExtensionWebContentsObserver*
 TestExtensionsBrowserClient::GetExtensionWebContentsObserver(
     content::WebContents* web_contents) {
   return nullptr;
 }
 
+scoped_refptr<update_client::UpdateClient>
+TestExtensionsBrowserClient::CreateUpdateClient(
+    content::BrowserContext* context) {
+  return update_client_factory_.is_null()
+             ? nullptr
+             : make_scoped_refptr(update_client_factory_.Run());
+}
+
 }  // namespace extensions