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

chrome/installer/util/install_util.h

Index: chrome/installer/util/install_util.h
diff --git a/chrome/installer/util/install_util.h b/chrome/installer/util/install_util.h
index 70c7498301231c905733bc564e79c097f300a180..0b94257aa2c17427d9bce763a7896faa0524794e 100644
--- a/chrome/installer/util/install_util.h
+++ b/chrome/installer/util/install_util.h
@@ -86,12 +86,6 @@ class InstallUtil {
   // InstallDetails.
   static bool IsPerUserInstall();
 
-  // Returns true if this is running setup process for Chrome SxS (as
-  // indicated by the presence of --chrome-sxs on the command line) or if this
-  // is running Chrome process from the Chrome SxS installation (as indicated
-  // by either --chrome-sxs or the executable path).
-  static bool IsChromeSxSProcess();
-
   // Returns true if the sentinel file exists (or the path cannot be obtained).
   static bool IsFirstRunSentinelPresent();