Make the Mac Info.plist SCM keys generic

base/file_version_info_mac.mm

 // 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.
 
 #include "base/file_version_info_mac.h"
 
 #import <Foundation/Foundation.h>
 
 #include "base/file_path.h"
 #include "base/logging.h"
@@ skipping 79 matching lines @@
 
 string16 FileVersionInfoMac::original_filename() {
   return GetString16Value(kCFBundleNameKey);
 }
 
 string16 FileVersionInfoMac::special_build() {
   return string16();
 }
 
 string16 FileVersionInfoMac::last_change() {
-  return GetString16Value(CFSTR("SVNRevision"));
+  return GetString16Value(CFSTR("SCMRevision"));
 }
 
 bool FileVersionInfoMac::is_official_build() {
 #if defined (GOOGLE_CHROME_BUILD)
   return true;
 #else
   return false;
 #endif
 }
 
 string16 FileVersionInfoMac::GetString16Value(CFStringRef name) {
   if (bundle_) {
     NSString *ns_name = base::mac::CFToNSCast(name);
     NSString* value = [bundle_ objectForInfoDictionaryKey:ns_name];
     if (value) {
       return base::SysNSStringToUTF16(value);
     }
   }
   return string16();
 }