Migrate ChromeOS to base::MemoryPressureMonitor

chromeos/chromeos_switches.cc

 // Copyright (c) 2012 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 "chromeos/chromeos_switches.h"
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 
 // TODO(rsorokin): alphabetize all of these switches so they
@@ skipping 329 matching lines @@
 
 bool MemoryPressureHandlingEnabled() {
   if ((base::CommandLine::ForCurrentProcess()->HasSwitch(
           chromeos::switches::kDisableMemoryPressureSystemChromeOS)) ||
       (base::FieldTrialList::FindFullName(kMemoryPressureExperimentName) ==
        kMemoryPressureHandlingOff))
     return false;
   return true;
 }
 
-base::MemoryPressureObserverChromeOS::MemoryPressureThresholds
-GetMemoryPressureThresholds() {
+MemoryPressureThresholds GetMemoryPressureThresholds() {
   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
           kMemoryPressureThresholds)) {
     const std::string group_name =
         base::FieldTrialList::FindFullName(kMemoryPressureExperimentName);
     if (group_name == kConservativeThreshold)
-      return base::MemoryPressureObserverChromeOS::THRESHOLD_CONSERVATIVE;
+      return THRESHOLD_CONSERVATIVE;
     if (group_name == kAggressiveCacheDiscardThreshold)
-      return base::MemoryPressureObserverChromeOS::
-          THRESHOLD_AGGRESSIVE_CACHE_DISCARD;
+      return THRESHOLD_AGGRESSIVE_CACHE_DISCARD;
     if (group_name == kAggressiveTabDiscardThreshold)
-      return base::MemoryPressureObserverChromeOS::
-          THRESHOLD_AGGRESSIVE_TAB_DISCARD;
+      return THRESHOLD_AGGRESSIVE_TAB_DISCARD;
     if (group_name == kAggressiveThreshold)
-      return base::MemoryPressureObserverChromeOS::THRESHOLD_AGGRESSIVE;
-    return base::MemoryPressureObserverChromeOS::THRESHOLD_DEFAULT;
+      return THRESHOLD_AGGRESSIVE;
+    return THRESHOLD_DEFAULT;
   }
 
   const std::string option =
       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           kMemoryPressureThresholds);
   if (option == kConservativeThreshold)
-    return base::MemoryPressureObserverChromeOS::THRESHOLD_CONSERVATIVE;
+    return THRESHOLD_CONSERVATIVE;
   if (option == kAggressiveCacheDiscardThreshold)
-    return base::MemoryPressureObserverChromeOS::
-        THRESHOLD_AGGRESSIVE_CACHE_DISCARD;
+    return THRESHOLD_AGGRESSIVE_CACHE_DISCARD;
   if (option == kAggressiveTabDiscardThreshold)
-    return base::MemoryPressureObserverChromeOS::
-        THRESHOLD_AGGRESSIVE_TAB_DISCARD;
+    return THRESHOLD_AGGRESSIVE_TAB_DISCARD;
   if (option == kAggressiveThreshold)
-    return base::MemoryPressureObserverChromeOS::THRESHOLD_AGGRESSIVE;
+    return THRESHOLD_AGGRESSIVE;
 
-  return base::MemoryPressureObserverChromeOS::THRESHOLD_DEFAULT;
+  return THRESHOLD_DEFAULT;
 }
 
 }  // namespace switches
 }  // namespace chromeos