Refactor chrome.alarms interface to support absolute alarm deadlines.

chrome/browser/extensions/extension_prefs.h

Index: chrome/browser/extensions/extension_prefs.h
diff --git a/chrome/browser/extensions/extension_prefs.h b/chrome/browser/extensions/extension_prefs.h
index 37607bfe5e01f14efdaa14162ba5a37a5048c980..76a5bd8157f8a1bfc168cec215accb3acf6ae531 100644
--- a/chrome/browser/extensions/extension_prefs.h
+++ b/chrome/browser/extensions/extension_prefs.h
@@ -28,7 +28,7 @@ class PrefService;
 class URLPatternSet;
 
 namespace extensions {
-struct AlarmPref;
+struct Alarm;
 struct ExtensionOmniboxSuggestion;
 }
 
@@ -278,10 +278,10 @@ class ExtensionPrefs : public extensions::ContentSettingsStore::Observer,
 
   // Controls a list of alarms for this extension, including the next time they
   // should run.
-  std::vector<extensions::AlarmPref> GetRegisteredAlarms(
+  std::vector<extensions::Alarm> GetRegisteredAlarms(
       const std::string& extension_id);
   void SetRegisteredAlarms(const std::string& extension_id,
-                           const std::vector<extensions::AlarmPref>& alarms);
+                           const std::vector<extensions::Alarm>& alarms);
 
   // Controls the omnibox default suggestion as set by the extension.
   extensions::ExtensionOmniboxSuggestion GetOmniboxDefaultSuggestion(