Fix keyword search erroneously not triggering in two obscure cases:

chrome/browser/ui/views/omnibox/omnibox_view_views.cc

Index: chrome/browser/ui/views/omnibox/omnibox_view_views.cc
===================================================================
--- chrome/browser/ui/views/omnibox/omnibox_view_views.cc	(revision 124492)
+++ chrome/browser/ui/views/omnibox/omnibox_view_views.cc	(working copy)
@@ -594,8 +594,9 @@
       (new_sel.start() <= sel_before_change_.GetMin());
 
   const bool something_changed = model_->OnAfterPossibleChange(
-      new_text, new_sel.start(), new_sel.end(), selection_differs,
-      text_changed, just_deleted_text, !textfield_->IsIMEComposing());
+      text_before_change_, new_text, new_sel.start(), new_sel.end(),
+      selection_differs, text_changed, just_deleted_text,
+      !textfield_->IsIMEComposing());
 
   // If only selection was changed, we don't need to call |model_|'s
   // OnChanged() method, which is called in TextChanged().