Fix SimpleCache field trial creation.

chrome/browser/about_flags.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/about_flags.h"
 
 #include <string.h>
 
 #include <algorithm>
 #include <iterator>
@@ skipping 196 matching lines @@
     cc::switches::kMaxTilesForInterestArea, "64"},
   { IDS_FLAGS_MAX_TILES_FOR_INTEREST_AREA_TALL,
     cc::switches::kMaxTilesForInterestArea, "128"},
   { IDS_FLAGS_MAX_TILES_FOR_INTEREST_AREA_GRANDE,
     cc::switches::kMaxTilesForInterestArea, "256"},
   { IDS_FLAGS_MAX_TILES_FOR_INTEREST_AREA_VENTI,
     cc::switches::kMaxTilesForInterestArea, "512"}
 };
 
 const Experiment::Choice kSimpleCacheBackendChoices[] = {
-  { IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED, "", "off" },
+  { IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
+    switches::kUseSimpleCacheBackend, "off" },
   { IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
     switches::kUseSimpleCacheBackend, "on"}
 };
 
 // RECORDING USER METRICS FOR FLAGS:
 // -----------------------------------------------------------------------------
 // The first line of the experiment is the internal name. If you'd like to
 // gather statistics about the usage of your flag, you should append a marker
 // comment to the end of the feature name, like so:
 //   "my-special-feature",  // FLAGS:RECORD_UMA
@@ skipping 1607 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags