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

components/update_client/test_installer.h

 // Copyright 2013 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.
 
 #ifndef COMPONENTS_UPDATE_CLIENT_TEST_INSTALLER_H_
 #define COMPONENTS_UPDATE_CLIENT_TEST_INSTALLER_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "components/update_client/update_client.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace update_client {
 
 // TODO(sorin): consider reducing the number of the installer mocks.
 // A TestInstaller is an installer that does nothing for installation except
 // increment a counter.
 class TestInstaller : public CrxInstaller {
  public:
   TestInstaller();
 
   void OnUpdateError(int error) override;
 
-  bool Install(const base::DictionaryValue& manifest,
-               const base::FilePath& unpack_path) override;
+  Result Install(const base::DictionaryValue& manifest,
+                 const base::FilePath& unpack_path) override;
 
   bool GetInstalledFile(const std::string& file,
                         base::FilePath* installed_file) override;
 
   bool Uninstall() override;
 
   int error() const { return error_; }
 
   int install_count() const { return install_count_; }
 
@@ skipping 18 matching lines @@
 
   base::FilePath install_directory_;
 };
 
 // A VersionedTestInstaller is an installer that installs files into versioned
 // directories (e.g. somedir/25.23.89.141/<files>).
 class VersionedTestInstaller : public TestInstaller {
  public:
   VersionedTestInstaller();
 
-  bool Install(const base::DictionaryValue& manifest,
-               const base::FilePath& unpack_path) override;
+  Result Install(const base::DictionaryValue& manifest,
+                 const base::FilePath& unpack_path) override;
 
   bool GetInstalledFile(const std::string& file,
                         base::FilePath* installed_file) override;
 
  private:
   ~VersionedTestInstaller() override;
 
   base::FilePath install_directory_;
   base::Version current_version_;
 };
 
 }  // namespace update_client
 
 #endif  // COMPONENTS_UPDATE_CLIENT_TEST_INSTALLER_H_