Broke out layout metric information from ViewsDelegate to LayoutProvider

ash/test/ash_test_helper.cc

 // Copyright 2013 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/test/ash_test_helper.h"
 
 #include "ash/accelerators/accelerator_controller_delegate_aura.h"
 #include "ash/aura/wm_shell_aura.h"
 #include "ash/common/test/test_session_state_delegate.h"
 #include "ash/common/test/test_system_tray_delegate.h"
@@ skipping 70 matching lines @@
 
 AshTestHelper::~AshTestHelper() {}
 
 void AshTestHelper::SetUp(bool start_session) {
   display::ResetDisplayIdForTest();
   if (config_ != Config::CLASSIC)
     aura::test::EnvTestHelper().SetAlwaysUseLastMouseLocation(true);
   // WindowManager creates WMState for mash.
   if (config_ == Config::CLASSIC)
     wm_state_ = base::MakeUnique<::wm::WMState>();
-  views_delegate_ = ash_test_environment_->CreateViewsDelegate();
+  test_views_delegate_ = ash_test_environment_->CreateViewsDelegate();
 
   // Disable animations during tests.
   zero_duration_mode_.reset(new ui::ScopedAnimationDurationScaleMode(
       ui::ScopedAnimationDurationScaleMode::ZERO_DURATION));
   ui::InitializeInputMethodForTesting();
 
   // Creates Shell and hook with Desktop.
   if (!test_shell_delegate_)
     test_shell_delegate_ = new TestShellDelegate;
 
@@ skipping 275 matching lines @@
   std::set<RootWindowController*> roots =
       window_manager_app_->window_manager()->GetRootWindowControllers();
   std::vector<RootWindowController*> ordered_roots;
   ordered_roots.insert(ordered_roots.begin(), roots.begin(), roots.end());
   std::sort(ordered_roots.begin(), ordered_roots.end(), &CompareByDisplayId);
   return ordered_roots;
 }
 
 }  // namespace test
 }  // namespace ash