Revert of Makes the component installers return a Result instead of a bool.

chrome/browser/component_updater/origin_trials_component_installer.cc

 // Copyright 2016 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/component_updater/origin_trials_component_installer.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 50 matching lines @@
 
 bool OriginTrialsComponentInstallerTraits::
     SupportsGroupPolicyEnabledComponentUpdates() const {
   return false;
 }
 
 bool OriginTrialsComponentInstallerTraits::RequiresNetworkEncryption() const {
   return false;
 }
 
-update_client::CrxInstaller::Result
-OriginTrialsComponentInstallerTraits::OnCustomInstall(
+bool OriginTrialsComponentInstallerTraits::OnCustomInstall(
     const base::DictionaryValue& manifest,
     const base::FilePath& install_dir) {
-  return update_client::CrxInstaller::Result(0);
+  return true;
 }
 
 void OriginTrialsComponentInstallerTraits::ComponentReady(
     const base::Version& version,
     const base::FilePath& install_dir,
     std::unique_ptr<base::DictionaryValue> manifest) {
   // Read the configuration from the manifest and set values in browser
   // local_state. These will be used on the next browser restart.
   // If an individual configuration value is missing, treat as a reset to the
   // browser defaults.
@@ skipping 47 matching lines @@
                                    const base::FilePath& user_data_dir) {
   std::unique_ptr<ComponentInstallerTraits> traits(
       new OriginTrialsComponentInstallerTraits());
   // |cus| will take ownership of |installer| during installer->Register(cus).
   DefaultComponentInstaller* installer =
       new DefaultComponentInstaller(std::move(traits));
   installer->Register(cus, base::Closure());
 }
 
 }  // namespace component_updater