Revert of [Athena, Cleanup] rename WidnowManager::GetInstance -> ::Get

athena/resource_manager/resource_manager_unittest.cc

 /// Copyright 2014 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 "athena/activity/public/activity.h"
 #include "athena/activity/public/activity_manager.h"
 #include "athena/activity/public/activity_view_model.h"
 #include "athena/resource_manager/memory_pressure_notifier.h"
 #include "athena/resource_manager/public/resource_manager.h"
 #include "athena/test/athena_test_base.h"
@@ skipping 211 matching lines @@
   ResourceManager::Get()->SetMemoryPressureAndStopMonitoring(
       MemoryPressureObserver::MEMORY_PRESSURE_CRITICAL);
   EXPECT_EQ(Activity::ACTIVITY_VISIBLE, app1->GetCurrentState());
   EXPECT_EQ(Activity::ACTIVITY_INVISIBLE, app2->GetCurrentState());
   EXPECT_EQ(Activity::ACTIVITY_INVISIBLE, app3->GetCurrentState());
   // Note: This might very well be unloaded with this memory pressure.
   EXPECT_NE(Activity::ACTIVITY_VISIBLE, app4->GetCurrentState());
 
   // Once the split view mode gets turned on, more windows should become
   // visible.
-  WindowManager::Get()->ToggleSplitViewForTest();
+  WindowManager::GetInstance()->ToggleSplitViewForTest();
   EXPECT_EQ(Activity::ACTIVITY_VISIBLE, app1->GetCurrentState());
   EXPECT_EQ(Activity::ACTIVITY_VISIBLE, app2->GetCurrentState());
   EXPECT_NE(Activity::ACTIVITY_VISIBLE, app3->GetCurrentState());
   EXPECT_NE(Activity::ACTIVITY_VISIBLE, app4->GetCurrentState());
 
   // Going back to a relaxed memory pressure should reload the old activities.
   ResourceManager::Get()->SetMemoryPressureAndStopMonitoring(
       MemoryPressureObserver::MEMORY_PRESSURE_LOW);
   EXPECT_EQ(Activity::ACTIVITY_VISIBLE, app1->GetCurrentState());
   EXPECT_EQ(Activity::ACTIVITY_VISIBLE, app2->GetCurrentState());
@@ skipping 110 matching lines @@
   ResourceManager::Get()->SetMemoryPressureAndStopMonitoring(
       MemoryPressureObserver::MEMORY_PRESSURE_CRITICAL);
   EXPECT_EQ(Activity::ACTIVITY_VISIBLE, app1->GetCurrentState());
   EXPECT_EQ(Activity::ACTIVITY_INVISIBLE, app2->GetCurrentState());
   EXPECT_EQ(Activity::ACTIVITY_UNLOADED, app3->GetCurrentState());
   EXPECT_EQ(Activity::ACTIVITY_UNLOADED, app4->GetCurrentState());
 }
 
 }  // namespace test
 }  // namespace athena