Revert 268933 "Helpful message for not checking SupportsMultiple..."

trunk/src/ash/display/display_manager.cc

Index: trunk/src/ash/display/display_manager.cc
===================================================================
--- trunk/src/ash/display/display_manager.cc	(revision 269080)
+++ trunk/src/ash/display/display_manager.cc	(working copy)
@@ -632,9 +632,11 @@
 void DisplayManager::UpdateDisplays(
     const std::vector<DisplayInfo>& updated_display_info_list) {
 #if defined(OS_WIN)
-  DCHECK_EQ(1u, updated_display_info_list.size()) <<
-      ": Multiple display test does not work on Windows bots. Please "
-      "skip (don't disable) the test using SupportsMultipleDisplays()";
+  if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
+    DCHECK_EQ(1u, updated_display_info_list.size()) <<
+        "Multiple display test does not work on Win8 bots. Please "
+        "skip (don't disable) the test using SupportsMultipleDisplays()";
+  }
 #endif
 
   DisplayInfoList new_display_info_list = updated_display_info_list;