arc: Abort booting ARC if the device is critically low on disk space.

components/arc/arc_bridge_service.h

 // Copyright 2015 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 COMPONENTS_ARC_ARC_BRIDGE_SERVICE_H_
 #define COMPONENTS_ARC_ARC_BRIDGE_SERVICE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 21 matching lines @@
   // Describes the reason the bridge is stopped.
   enum class StopReason {
     // ARC instance has been gracefully shut down.
     SHUTDOWN,
 
     // Errors occurred during the ARC instance boot. This includes any failures
     // before the instance is actually attempted to be started, and also
     // failures on bootstrapping IPC channels with Android.
     GENERIC_BOOT_FAILURE,
 
+    // The device is critically low on disk space.
+    LOW_DISK_SPACE,
+
     // ARC instance has crashed.
     CRASH,
   };
 
   // Notifies life cycle events of ArcBridgeService.
   class Observer {
    public:
     // Called whenever the state of the bridge has changed.
     virtual void OnBridgeReady() {}
     virtual void OnBridgeStopped(StopReason reason) {}
@@ skipping 212 matching lines @@
 
   // WeakPtrFactory to use callbacks.
   base::WeakPtrFactory<ArcBridgeService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcBridgeService);
 };
 
 }  // namespace arc
 
 #endif  // COMPONENTS_ARC_ARC_BRIDGE_SERVICE_H_