Migrate ChromeOS to base::MemoryPressureMonitor

content/browser/browser_main_loop.h

Index: content/browser/browser_main_loop.h
diff --git a/content/browser/browser_main_loop.h b/content/browser/browser_main_loop.h
index 5050cd0cde34ae88635651942ffc3a6cd6c59fe7..19b16f61bd5910e4de4324421ac7645645408e25 100644
--- a/content/browser/browser_main_loop.h
+++ b/content/browser/browser_main_loop.h
@@ -20,9 +20,6 @@ class HighResolutionTimerManager;
 class MessageLoop;
 class PowerMonitor;
 class SystemMonitor;
-#if defined(OS_CHROMEOS)
-class MemoryPressureObserverChromeOS;
-#endif
 namespace trace_event {
 class TraceMemoryController;
 class TraceEventSystemStatsMonitor;
@@ -118,12 +115,6 @@ class CONTENT_EXPORT BrowserMainLoop {
     return device_monitor_mac_.get();
   }
 #endif
-#if defined(OS_CHROMEOS)
-  // Return the MemoryPressureObserver which might be NULL.
-  base::MemoryPressureObserverChromeOS* memory_pressure_observer() {
-    return memory_pressure_observer_.get();
-  }
-#endif
 
  private:
   class MemoryObserver;
@@ -184,9 +175,6 @@ class CONTENT_EXPORT BrowserMainLoop {
   // Android implementation of ScreenOrientationDelegate
   scoped_ptr<ScreenOrientationDelegate> screen_orientation_delegate_;
 #endif
-#if defined(OS_CHROMEOS)
-  scoped_ptr<base::MemoryPressureObserverChromeOS> memory_pressure_observer_;
-#endif
   // The startup task runner is created by CreateStartupTasks()
   scoped_ptr<StartupTaskRunner> startup_task_runner_;