Move Singleton and related structs to namespace base

content/browser/renderer_host/renderer_frame_manager.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 "content/browser/renderer_host/renderer_frame_manager.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/memory_pressure_listener.h"
 #include "base/memory/memory_pressure_monitor.h"
 #include "base/memory/shared_memory.h"
 #include "base/sys_info.h"
 #include "content/common/host_shared_bitmap_manager.h"
 
 namespace content {
 namespace {
 
 const int kModeratePressurePercentage = 50;
 const int kCriticalPressurePercentage = 10;
 
 }  // namespace
 
 RendererFrameManager* RendererFrameManager::GetInstance() {
-  return Singleton<RendererFrameManager>::get();
+  return base::Singleton<RendererFrameManager>::get();
 }
 
 void RendererFrameManager::AddFrame(RendererFrameManagerClient* frame,
                                     bool locked) {
   RemoveFrame(frame);
   if (locked)
     locked_frames_[frame] = 1;
   else
     unlocked_frames_.push_front(frame);
   CullUnlockedFrames(GetMaxNumberOfSavedFrames());
@@ skipping 108 matching lines @@
       percentage = kCriticalPressurePercentage;
       break;
     case base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE:
       // No need to change anything when there is no pressure.
       return;
   }
   CullUnlockedFrames(std::max(1, (saved_frame_limit * percentage) / 100));
 }
 
 }  // namespace content