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

chrome/browser/component_updater/widevine_cdm_component_installer.cc

Index: chrome/browser/component_updater/widevine_cdm_component_installer.cc
diff --git a/chrome/browser/component_updater/widevine_cdm_component_installer.cc b/chrome/browser/component_updater/widevine_cdm_component_installer.cc
index 5598540eaeb5a9cfc1875f66d1c7b49030259b10..fed96ad1cd6d7de6476f1cededf66cbd5a783d11 100644
--- a/chrome/browser/component_updater/widevine_cdm_component_installer.cc
+++ b/chrome/browser/component_updater/widevine_cdm_component_installer.cc
@@ -250,9 +250,8 @@
   // The following methods override ComponentInstallerTraits.
   bool SupportsGroupPolicyEnabledComponentUpdates() const override;
   bool RequiresNetworkEncryption() const override;
-  update_client::CrxInstaller::Result OnCustomInstall(
-      const base::DictionaryValue& manifest,
-      const base::FilePath& install_dir) override;
+  bool OnCustomInstall(const base::DictionaryValue& manifest,
+                               const base::FilePath& install_dir) override;
   bool VerifyInstallation(
       const base::DictionaryValue& manifest,
       const base::FilePath& install_dir) const override;
@@ -289,11 +288,10 @@
   return false;
 }
 
-update_client::CrxInstaller::Result
-WidevineCdmComponentInstallerTraits::OnCustomInstall(
+bool WidevineCdmComponentInstallerTraits::OnCustomInstall(
     const base::DictionaryValue& manifest,
     const base::FilePath& install_dir) {
-  return update_client::CrxInstaller::Result(0);
+  return true;
 }
 
 // Once the CDM is ready, check the CDM adapter.