Replace PruneAllButActive with PruneAllButVisible.

chrome/browser/ui/browser_navigator.cc

 // Copyright (c) 2012 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/ui/browser_navigator.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
@@ skipping 522 matching lines @@
     GURL url;
     if (params->url.is_empty()) {
       url = params->browser->profile()->GetHomePage();
       params->transition = content::PageTransitionFromInt(
           params->transition | content::PAGE_TRANSITION_HOME_PAGE);
     } else {
       url = params->url;
     }
 
     if (params->disposition != CURRENT_TAB) {
+      // TODO(creis): We can't allow this to swap in a pending navigation to the
+      // local NTP until it commits.  Not sure how to achieve that.
       swapped_in_instant = SwapInInstantNTP(params, url, NULL);
       if (!swapped_in_instant)
         params->target_contents = CreateTargetContents(*params, url);
 
       // This function takes ownership of |params->target_contents| until it
       // is added to a TabStripModel.
       target_contents_owner.TakeOwnership();
     } else {
       // ... otherwise if we're loading in the current tab, the target is the
       // same as the source.
@@ skipping 115 matching lines @@
   bool reverse_on_redirect = false;
   content::BrowserURLHandler::GetInstance()->RewriteURLIfNecessary(
       &rewritten_url, browser_context, &reverse_on_redirect);
 
   // Some URLs are mapped to uber subpages. Do not allow them in incognito.
   return !(rewritten_url.scheme() == chrome::kChromeUIScheme &&
            rewritten_url.host() == chrome::kChromeUIUberHost);
 }
 
 }  // namespace chrome