Move all components/offline_pages/ files into component/offline_pages/core

components/offline_pages/core/background/initialize_store_task_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/background/initialize_store_task.h"
+#include "components/offline_pages/core/background/initialize_store_task.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/test/test_simple_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
-#include "components/offline_pages/background/request_queue_in_memory_store.h"
+#include "components/offline_pages/core/background/request_queue_in_memory_store.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace offline_pages {
 
 using TestScenario = RequestQueueInMemoryStore::TestScenario;
 
 class InitializeStoreTaskTest : public testing::Test {
  public:
   InitializeStoreTaskTest();
   ~InitializeStoreTaskTest() override;
@@ skipping 75 matching lines @@
       &store, base::Bind(&InitializeStoreTaskTest::InitializeCallback,
                          base::Unretained(this)));
   task.Run();
   PumpLoop();
   EXPECT_TRUE(callback_called());
   EXPECT_FALSE(last_call_successful());
   EXPECT_EQ(StoreState::FAILED_RESET, store.state());
 }
 
 }  // namespace offline_pages