[Sync] Fixing easy lint violations.

components/sync_sessions/revisit/offset_tab_matcher_unittest.cc

 // Copyright 2015 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/sync_sessions/revisit/offset_tab_matcher.h"
 
 #include <memory>
 #include <string>
 
 #include "base/test/histogram_tester.h"
 #include "base/time/time.h"
 #include "components/sessions/core/serialized_navigation_entry.h"
 #include "components/sessions/core/serialized_navigation_entry_test_helper.h"
 #include "components/sessions/core/session_types.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 using sessions::SessionTab;
 
 namespace sync_sessions {
 
 namespace {
 
-static const std::string kExampleUrl = "http://www.example.com";
-static const std::string kDifferentUrl = "http://www.different.com";
+const char kExampleUrl[] = "http://www.example.com";
+const char kDifferentUrl[] = "http://www.different.com";
 
 sessions::SerializedNavigationEntry Entry(const std::string& url) {
   return sessions::SerializedNavigationEntryTestHelper::CreateNavigation(url,
                                                                          "");
 }
 
 std::unique_ptr<SessionTab> Tab(
     const int index,
     const base::Time timestamp = base::Time::Now()) {
   std::unique_ptr<SessionTab> tab(new SessionTab());
@@ skipping 143 matching lines @@
   tab2->navigations.push_back(Entry(kExampleUrl));
   tab2->navigations.push_back(Entry(kExampleUrl));
 
   OffsetTabMatcher matcher((PageEquality(GURL(kExampleUrl))));
   matcher.Check(tab1.get());
   matcher.Check(tab2.get());
   VerifyMatch(&matcher, 1);
 }
 
 }  // namespace sync_sessions