Tweak SVNVersion be happier (matches windows)....

base/file_version_info_mac.mm

 // Copyright (c) 2006-2008 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.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/logging.h"
 #include "base/string_util.h"
@@ skipping 85 matching lines @@
 
 std::wstring FileVersionInfo::original_filename() {
   return GetStringValue(L"CFBundleName");
 }
 
 std::wstring FileVersionInfo::special_build() {
   return L"";
 }
 
 std::wstring FileVersionInfo::last_change() {
-  return L"";
+  return GetStringValue(L"SVNRevision");
 }
 
 bool FileVersionInfo::is_official_build() {
+#if defined (GOOGLE_CHROME_BUILD)
+  return true;
+#else
   return false;
+#endif
 }
 
 bool FileVersionInfo::GetValue(const wchar_t* name, std::wstring* value_str) {
   if (bundle_) {
     NSString* value = [bundle_ objectForInfoDictionaryKey:
         [NSString stringWithUTF8String:WideToUTF8(name).c_str()]];
     if (value) {
       *value_str = reinterpret_cast<const wchar_t*>(
           [value cStringUsingEncoding:NSUTF32StringEncoding]);
       return true;
     }
   }
   return false;
 }
 
 std::wstring FileVersionInfo::GetStringValue(const wchar_t* name) {
   std::wstring str;
   if (GetValue(name, &str))
     return str;
   return L"";
 }