Re-load instant results when user text has whitespace changes.

chrome/browser/instant/instant_loader.cc

 // Copyright (c) 2010 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 "chrome/browser/instant/instant_loader.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "app/l10n_util.h"
@@ skipping 462 matching lines @@
       user_text.substr(1) : user_text;
 
   // We should preserve the transition type regardless of whether we're already
   // showing the url.
   last_transition_type_ = transition_type;
 
   // If state hasn't changed, just reuse the last suggestion. If the user
   // modifies the text of the omnibox in anyway the URL changes. We also need to
   // update if verbatim changes and we're showing instant results. We have to be
   // careful in checking user_text as in some situations InstantController
-  // passes in an empty string (when it knows the user_text won't matter).
-  if (url_ == url && (!template_url || verbatim == verbatim_)) {
+  // passes in an empty string (when it knows the user_text won't matter). In
+  // these cases, we don't worry about whether the new user text matches the old
+  // user text.
+  if ((url_ == url) &&
+      (new_user_text.empty() || user_text_ == new_user_text) &&
+      (!template_url || verbatim == verbatim_)) {
     suggested_text->assign(last_suggestion_);
     return;
   }
 
   DCHECK(!url.is_empty() && url.is_valid());
 
   url_ = url;
   user_text_ = new_user_text;
   verbatim_ = verbatim;
   last_suggestion_.clear();
@@ skipping 287 matching lines @@
         SetTakesFocusOnlyOnMouseDown(true);
   }
   registrar_.Add(
       this,
       NotificationType::RENDER_VIEW_HOST_CHANGED,
       Source<NavigationController>(&preview_contents_->controller()));
 #endif
 
   preview_contents_->tab_contents()->ShowContents();
 }