Allow installer::GetLocalizedString to return mode-specific strings.

chrome/installer/util/install_util.cc

Index: chrome/installer/util/install_util.cc
diff --git a/chrome/installer/util/install_util.cc b/chrome/installer/util/install_util.cc
index 181fbd63e677b5bdb620a9b5f4d4fb79d9705e11..4eb66f4b05f7676ba90b8f92ce97b0633e9bc4f7 100644
--- a/chrome/installer/util/install_util.cc
+++ b/chrome/installer/util/install_util.cc
@@ -269,15 +269,6 @@ bool InstallUtil::IsPerUserInstall() {
   return !install_static::InstallDetails::Get().system_level();
 }
 
-bool InstallUtil::IsChromeSxSProcess() {
-#if defined(GOOGLE_CHROME_BUILD)
-  return install_static::InstallDetails::Get().install_mode_index() ==
-         install_static::CANARY_INDEX;
-#else
-  return false;
-#endif
-}
-
 // static
 bool InstallUtil::IsFirstRunSentinelPresent() {
   // TODO(msw): Consolidate with first_run::internal::IsFirstRunSentinelPresent.