chromeos: Refactor shelf to create ShelfView earlier in startup

ash/shelf/shelf_locking_manager_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 "ash/shelf/shelf_locking_manager.h"
 
 #include "ash/session/session_state_delegate.h"
 #include "ash/shelf/wm_shelf.h"
 #include "ash/test/ash_test_base.h"
 
 namespace ash {
-namespace test {
+namespace {
 
 // Tests the shelf behavior when the screen or session is locked.
-class ShelfLockingManagerTest : public ash::test::AshTestBase {
+class ShelfLockingManagerTest : public test::AshTestBase {
  public:
   ShelfLockingManagerTest() {}
 
   ShelfLockingManager* GetShelfLockingManager() {
     return GetPrimaryShelf()->GetShelfLockingManagerForTesting();
   }
 
   void SetScreenLocked(bool locked) {
     GetShelfLockingManager()->OnLockStateChanged(locked);
   }
@@ skipping 45 matching lines @@
   EXPECT_EQ(SHELF_ALIGNMENT_BOTTOM, shelf->GetAlignment());
 
   SetScreenLocked(true);
   EXPECT_EQ(SHELF_ALIGNMENT_BOTTOM_LOCKED, shelf->GetAlignment());
   shelf->SetAlignment(SHELF_ALIGNMENT_RIGHT);
   EXPECT_EQ(SHELF_ALIGNMENT_BOTTOM_LOCKED, shelf->GetAlignment());
   SetScreenLocked(false);
   EXPECT_EQ(SHELF_ALIGNMENT_RIGHT, shelf->GetAlignment());
 }
 
-}  // namespace test
+}  // namespace
 }  // namespace ash