Remove prerender sessionStorage namespace merging (1/2)

chrome/browser/prerender/prerender_field_trial.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/prerender/prerender_field_trial.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
@@ skipping 62 matching lines @@
     "https://clients4.google.com/prerenderservice/?q=";
 const int kMinPrerenderServiceTimeoutMs = 1;
 const int kMaxPrerenderServiceTimeoutMs = 10000;
 const int kDefaultPrerenderServiceTimeoutMs = 1000;
 const int kMinPrefetchListTimeoutSeconds = 1;
 const int kMaxPrefetchListTimeoutSeconds = 1800;
 const int kDefaultPrefetchListTimeoutSeconds = 300;
 const char kSkipPrerenderLocalCanadidates[] = "SkipPrerenderLocalCandidates";
 const char kSkipPrerenderServiceCanadidates[] =
     "SkipPrerenderServiceCandidates";
-const char kDisableSessionStorageNamespaceMerging[] =
-    "DisableSessionStorageNamespaceMerging";
 const char kPrerenderCookieStore[] = "PrerenderCookieStore";
 
 void SetupPrerenderFieldTrial() {
   const FieldTrial::Probability divisor = 1000;
 
   FieldTrial::Probability control_probability;
   FieldTrial::Probability experiment_multi_prerender_probability;
   FieldTrial::Probability experiment_15min_ttl_probability;
   FieldTrial::Probability experiment_no_use_probability;
   FieldTrial::Probability experiment_match_complete_probability;
@@ skipping 378 matching lines @@
 bool SkipLocalPredictorLocalCandidates() {
   return GetLocalPredictorSpecValue(kSkipPrerenderLocalCanadidates) ==
       kEnabledGroup;
 }
 
 bool SkipLocalPredictorServiceCandidates() {
   return GetLocalPredictorSpecValue(kSkipPrerenderServiceCanadidates) ==
       kEnabledGroup;
 }
 
-bool ShouldMergeSessionStorageNamespaces() {
-  return GetLocalPredictorSpecValue(kDisableSessionStorageNamespaceMerging) !=
-      kDisabledGroup;
-}
-
 bool IsPrerenderCookieStoreEnabled() {
   return GetLocalPredictorSpecValue(kPrerenderCookieStore) != kDisabledGroup &&
       FieldTrialList::FindFullName(kPrerenderCookieStore) != kDisabledGroup;
 }
 
 }  // namespace prerender