Move components/memory_coordinator -> content/

content/browser/memory/memory_monitor_linux.cc

 // Copyright (c) 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/memory_coordinator/browser/memory_monitor_linux.h"
+#include "content/browser/memory/memory_monitor_linux.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/process/process_metrics.h"
 
-namespace memory_coordinator {
+namespace content {
 
 namespace {
 
-// A global static instance of the default delegate. Used by default by
-// MemoryMonitorLinux.
-MemoryMonitorDelegate g_memory_monitor_delegate;
-
 // The number of bits to shift to convert KiB to MiB.
 const int kShiftKiBtoMiB = 10;
 
 }  // namespace
 
 MemoryMonitorLinux::MemoryMonitorLinux(MemoryMonitorDelegate* delegate)
     : delegate_(delegate) {}
 
+MemoryMonitorLinux::~MemoryMonitorLinux() {}
+
 int MemoryMonitorLinux::GetFreeMemoryUntilCriticalMB() {
   base::SystemMemoryInfoKB mem_info = {};
   delegate_->GetSystemMemoryInfo(&mem_info);
 
   // According to kernel commit 34e431b0ae398fc54ea69ff85ec700722c9da773,
   // "available" is the "amount of memory that is available for a new workload
   // without pushing the system into swap"; return that value if it is valid.
   // Old linux kernels (before 3.14) don't support "available" and show zero
   // instead.
   if (mem_info.available > 0)
     return mem_info.available >> kShiftKiBtoMiB;
 
   // If there is no "available" value, guess at it based on free memory and
   // what the OS can easily discard.
   return (mem_info.free + mem_info.buffers + mem_info.cached) >> kShiftKiBtoMiB;
 }
 
 // static
 std::unique_ptr<MemoryMonitorLinux> MemoryMonitorLinux::Create(
     MemoryMonitorDelegate* delegate) {
   return base::MakeUnique<MemoryMonitorLinux>(delegate);
 }
 
 // Implementation of factory function defined in memory_monitor.h.
 std::unique_ptr<MemoryMonitor> CreateMemoryMonitor() {
-  return MemoryMonitorLinux::Create(&g_memory_monitor_delegate);
+  return MemoryMonitorLinux::Create(MemoryMonitorDelegate::GetInstance());
 }
 
-}  // namespace memory_coordinator
+}  // namespace content