Fix crash due to parsing of raw branch code from Google Update

chrome/browser/views/about_chrome_view.h

Index: chrome/browser/views/about_chrome_view.h
===================================================================
--- chrome/browser/views/about_chrome_view.h	(revision 35456)
+++ chrome/browser/views/about_chrome_view.h	(working copy)
@@ -190,6 +190,9 @@
   // Our current version.
   std::wstring current_version_;
 
+  // Additional information about the version (channel and build number).
+  std::wstring version_details_;
+
   // The version Google Update reports is available to us.
   std::wstring new_version_available_;