Popular sites on the NTP: check that experiment group StartsWith (rather than IS) "Enabled"

chrome/browser/android/most_visited_sites.cc

 // Copyright 2013 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/android/most_visited_sites.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "chrome/browser/android/popular_sites.h"
 #include "chrome/browser/history/top_sites_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_android.h"
 #include "chrome/browser/search/suggestions/suggestions_service_factory.h"
 #include "chrome/browser/search/suggestions/suggestions_source.h"
 #include "chrome/browser/sync/profile_sync_service.h"
@@ skipping 88 matching lines @@
 bool ShouldShowPopularSites() {
   // Note: It's important to query the field trial state first, to ensure that
   // UMA reports the correct group.
   const std::string group_name =
       base::FieldTrialList::FindFullName(kPopularSitesFieldTrialName);
   base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
   if (cmd_line->HasSwitch(switches::kDisableNTPPopularSites))
     return false;
   if (cmd_line->HasSwitch(switches::kEnableNTPPopularSites))
     return true;
-  return group_name == "Enabled";
+  return base::StartsWith(group_name, "Enabled",
+                          base::CompareCase::INSENSITIVE_ASCII);
 }
 
 std::string GetPopularSitesFilename() {
   return variations::GetVariationParamValue(kPopularSitesFieldTrialName,
                                             "filename");
 }
 
 }  // namespace
 
 MostVisitedSites::MostVisitedSites(Profile* profile)
@@ skipping 453 matching lines @@
   }
 }
 
 static jlong Init(JNIEnv* env,
                   const JavaParamRef<jobject>& obj,
                   const JavaParamRef<jobject>& jprofile) {
   MostVisitedSites* most_visited_sites =
       new MostVisitedSites(ProfileAndroid::FromProfileAndroid(jprofile));
   return reinterpret_cast<intptr_t>(most_visited_sites);
 }