Show a notification when an ephemeral app consumes excessive disk space

extensions/browser/extension_prefs.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_EXTENSION_PREFS_H_
 #define EXTENSIONS_BROWSER_EXTENSION_PREFS_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
+#include "base/basictypes.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "extensions/browser/app_sorting.h"
 #include "extensions/browser/blacklist_state.h"
 #include "extensions/browser/extension_scoped_prefs.h"
@@ skipping 515 matching lines @@
   // Used for verification of installed extension ids. For the Set method, pass
   // null to remove the preference.
   const base::DictionaryValue* GetInstallSignature();
   void SetInstallSignature(const base::DictionaryValue* signature);
 
   // The installation parameter associated with the extension.
   std::string GetInstallParam(const std::string& extension_id) const;
   void SetInstallParam(const std::string& extension_id,
                        const std::string& install_parameter);
 
+  // Gets/sets the next threshold for displaying a notification if an extension
+  // or app consumes excessive disk space. Returns 0 if the initial threshold
+  // has not yet been reached.
+  int64 GetNextStorageThreshold(const std::string& extension_id) const;
+  void SetNextStorageThreshold(const std::string& extension_id,
+                               int64 next_threshold);
+
+  // Gets/sets whether notifications should be shown if an extension or app
+  // consumes too much disk space.
+  bool IsStorageNotificationEnabled(const std::string& extension_id) const;
+  void SetStorageNotificationEnabled(const std::string& extension_id,
+                                     bool enable_notifications);
+
  private:
   friend class ExtensionPrefsBlacklistedExtensions;  // Unit test.
   friend class ExtensionPrefsUninstallExtension;     // Unit test.
 
   enum DisableReasonChange {
     DISABLE_REASON_ADD,
     DISABLE_REASON_REMOVE,
     DISABLE_REASON_CLEAR
   };
 
@@ skipping 136 matching lines @@
   bool extensions_disabled_;
 
   ObserverList<ExtensionPrefsObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefs);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_PREFS_H_