Revert of Record offline histograms with suffix via Histogram::FactoryGet

components/offline_pages/client_policy_controller_unittest.cc

 // Copyright 2016 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 "components/offline_pages/client_policy_controller.h"
 
 #include "base/bind.h"
 #include "base/time/time.h"
-#include "components/offline_pages/client_namespace_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using LifetimeType = offline_pages::LifetimePolicy::LifetimeType;
 
 namespace offline_pages {
 
 namespace {
+const char kBookmarkNamespace[] = "bookmark";
+const char kLastNNamespace[] = "last_n";
 const char kUndefinedNamespace[] = "undefined";
 
 bool isTemporary(const OfflinePageClientPolicy& policy) {
   // Check if policy has a expire period > 0 or a limited number
   // of pages allowed.
   return (policy.lifetime_policy.page_limit > kUnlimitedPages ||
           !policy.lifetime_policy.expiration_period.is_zero());
 }
 
 }  // namespace
@@ skipping 30 matching lines @@
   EXPECT_TRUE(isTemporary(policy));
 }
 
 TEST_F(ClientPolicyControllerTest, CheckLastNDefined) {
   OfflinePageClientPolicy policy = controller()->GetPolicy(kLastNNamespace);
   EXPECT_EQ(policy.name_space, kLastNNamespace);
   EXPECT_TRUE(isTemporary(policy));
 }
 
 }  // namespace offline_pages