Switch from wcsftime to GetDateFormat to avoid crash in setup....

chrome/installer/util/install_util.cc

Index: chrome/installer/util/install_util.cc
===================================================================
--- chrome/installer/util/install_util.cc	(revision 74952)
+++ chrome/installer/util/install_util.cc	(working copy)
@@ -263,3 +263,17 @@
     *command_line = CommandLine::FromString(command);
   }
 }
+
+std::wstring InstallUtil::GetCurrentDate() {
+  static const wchar_t kDateFormat[] = L"yyyyMMdd";
+  wchar_t date_str[arraysize(kDateFormat)] = {0};
+  int len = GetDateFormatW(LOCALE_INVARIANT, 0, NULL, kDateFormat,
+                           date_str, arraysize(date_str));
+  if (len) {
+    --len;  // Subtract terminating \0.
+  } else {
+    PLOG(DFATAL) << "GetDateFormat";
+  }
+
+  return std::wstring(date_str, len);
+}