Remove multi-install from installer_util.

chrome/installer/util/install_util.h

 // Copyright (c) 2012 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.
 //
 // This file declares utility functions for the installer. The original reason
 // for putting these functions in installer\util library is so that we can
 // separate out the critical logic and write unit tests for it.
 
 #ifndef CHROME_INSTALLER_UTIL_INSTALL_UTIL_H_
 #define CHROME_INSTALLER_UTIL_INSTALL_UTIL_H_
@@ skipping 74 matching lines @@
 
   // Returns true if this installation path is per user, otherwise returns false
   // (per machine install, meaning: the exe_path contains the path to Program
   // Files).
   static bool IsPerUserInstall(const base::FilePath& exe_path);
 
   // Resets internal state for IsPerUserInstall so that the next call recomputes
   // with fresh data.
   static void ResetIsPerUserInstallForTest();
 
-  // Returns true if Chrome at |system_level| is a multi install.
-  static bool IsMultiInstall(bool system_install);
-
   // 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();
 
   // Populates |path| with EULA sentinel file path. Returns false on error.
@@ skipping 108 matching lines @@
    private:
     DISALLOW_COPY_AND_ASSIGN(ProgramCompare);
   };  // class ProgramCompare
 
  private:
   DISALLOW_COPY_AND_ASSIGN(InstallUtil);
 };
 
 
 #endif  // CHROME_INSTALLER_UTIL_INSTALL_UTIL_H_