Re-land chromeos: Add non-extension renderers to the freezer cgroup

chromeos/dbus/power_manager_client.h

 // 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.
 
 #ifndef CHROMEOS_DBUS_POWER_MANAGER_CLIENT_H_
 #define CHROMEOS_DBUS_POWER_MANAGER_CLIENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
+#include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "chromeos/chromeos_export.h"
 #include "chromeos/dbus/dbus_client.h"
 #include "chromeos/dbus/dbus_client_implementation_type.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 namespace power_manager {
 class PowerManagementPolicy;
 class PowerSupplyProperties;
 }
@@ skipping 73 matching lines @@
     // Called after IdleActionImminent() when the inactivity timer is reset
     // before the idle action has been performed.
     virtual void IdleActionDeferred() {}
   };
 
   // Adds and removes the observer.
   virtual void AddObserver(Observer* observer) = 0;
   virtual void RemoveObserver(Observer* observer) = 0;
   virtual bool HasObserver(const Observer* observer) const = 0;
 
+  // Interface for managing the power consumption of renderer processes.
+  class RenderProcessManagerDelegate {
+   public:
+    virtual ~RenderProcessManagerDelegate() {}
+
+    // Called when a suspend attempt is imminent but after all registered
+    // observers have reported readiness to suspend.  This is only called for
+    // suspends from the fully powered on state and not for suspends from dark
+    // resume.
+    virtual void SuspendImminent() = 0;
+
+    // Called when a previously announced suspend attempt has completed but
+    // before observers are notified about it.
+    virtual void SuspendDone() = 0;
+  };
+
+  // Sets the PowerManagerClient's RenderProcessManagerDelegate.  There can only
+  // be one delegate.
+  virtual void SetRenderProcessManagerDelegate(
+      base::WeakPtr<RenderProcessManagerDelegate> delegate) = 0;
+
   // Decreases the screen brightness. |allow_off| controls whether or not
   // it's allowed to turn off the back light.
   virtual void DecreaseScreenBrightness(bool allow_off) = 0;
 
   // Increases the screen brightness.
   virtual void IncreaseScreenBrightness() = 0;
 
   // Set the screen brightness to |percent|, in the range [0.0, 100.0].
   // If |gradual| is true, the transition will be animated.
   virtual void SetScreenBrightnessPercent(double percent, bool gradual) = 0;
@@ skipping 56 matching lines @@
   // Create() should be used instead.
   PowerManagerClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PowerManagerClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_POWER_MANAGER_CLIENT_H_