Adds instant to about:labs.

chrome/browser/labs.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/labs.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 56 matching lines @@
     kOsWin,
     switches::kEnableVerticalTabs
   },
   {
     "tabbed-options",  // Do not change; see above.
     IDS_LABS_TABBED_OPTIONS_NAME,
     IDS_LABS_TABBED_OPTIONS_DESCRIPTION,
     kOsAll,
     switches::kEnableTabbedOptions
   },
+  {
+    "match-preview",  // Do not change; see above.
+    IDS_LABS_INSTANT_NAME,
+    IDS_LABS_INSTANT_DESCRIPTION,
+    kOsWin,
+    switches::kEnableMatchPreview
+  },
 };
 
 // Extracts the list of enabled lab experiments from a profile and stores them
 // in a set.
 void GetEnabledLabs(const PrefService* prefs, std::set<std::string>* result) {
   const ListValue* enabled_experiments = prefs->GetList(
       prefs::kEnabledLabsExperiments);
   if (!enabled_experiments)
     return;
 
@@ skipping 144 matching lines @@
 
   if (enable)
     enabled_experiments.insert(internal_name);
   else
     enabled_experiments.erase(internal_name);
 
   SetEnabledLabs(profile->GetPrefs(), enabled_experiments);
 }
 
 }  // namespace Labs