Hold cros_component_installers in browser_process.

chrome/test/base/testing_browser_process.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/test/base/testing_browser_process.h"
 
 #include "base/path_service.h"
 #include "base/strings/string_util.h"
 #include "base/time/default_clock.h"
 #include "base/time/default_tick_clock.h"
@@ skipping 331 matching lines @@
 
 CRLSetFetcher* TestingBrowserProcess::crl_set_fetcher() {
   return nullptr;
 }
 
 component_updater::PnaclComponentInstaller*
 TestingBrowserProcess::pnacl_component_installer() {
   return nullptr;
 }
 
+#if defined(OS_CHROMEOS)
+component_updater::DefaultComponentInstaller*
+TestingBrowserProcess::cros_component_installer(
+    const std::string& name,
+    std::unique_ptr<component_updater::ComponentInstallerTraits>
+        installer_traits) {
+  static std::map<std::string,
+                  scoped_refptr<component_updater::DefaultComponentInstaller>>
+      cros_component_installers_;
+  auto it = cros_component_installers_.find(name);
+  if (it == cros_component_installers_.end()) {
+    cros_component_installers_[name] =
+        new component_updater::DefaultComponentInstaller(
+            std::move(installer_traits));
+  }
+  return cros_component_installers_[name].get();
+}
+#endif
+
 component_updater::SupervisedUserWhitelistInstaller*
 TestingBrowserProcess::supervised_user_whitelist_installer() {
   return nullptr;
 }
 
 MediaFileSystemRegistry* TestingBrowserProcess::media_file_system_registry() {
 #if defined(OS_ANDROID)
   NOTIMPLEMENTED();
   return nullptr;
 #else
@@ skipping 119 matching lines @@
 
 ///////////////////////////////////////////////////////////////////////////////
 
 TestingBrowserProcessInitializer::TestingBrowserProcessInitializer() {
   TestingBrowserProcess::CreateInstance();
 }
 
 TestingBrowserProcessInitializer::~TestingBrowserProcessInitializer() {
   TestingBrowserProcess::DeleteInstance();
 }