[Sync] Creating sync_sessions component, moving revisit logic.

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_driver/revisit/offset_tab_matcher.h"
+#include "components/sync_sessions/revisit/offset_tab_matcher.h"
 
 #include "base/memory/scoped_ptr.h"
 #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 "components/sync_driver/revisit/page_equality.h"
+#include "components/sync_sessions/revisit/page_equality.h"
+#include "components/sync_sessions/revisit/page_visit_observer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 using sessions::SessionTab;
 
-namespace sync_driver {
+namespace sync_sessions {
 
 namespace {
 
 static const std::string kExampleUrl = "http://www.example.com";
 static const std::string kDifferentUrl = "http://www.different.com";
 
 sessions::SerializedNavigationEntry Entry(const std::string& url) {
   return sessions::SerializedNavigationEntryTestHelper::CreateNavigation(url,
                                                                          "");
 }
@@ skipping 146 matching lines @@
   scoped_ptr<SessionTab> tab2 = Tab(1, shared_now);
   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_driver
+}  // namespace sync_sessions