When critical updates have been installed and the user has been idle for quite some time, show a ...

chrome/browser/upgrade_detector.h

Index: chrome/browser/upgrade_detector.h
===================================================================
--- chrome/browser/upgrade_detector.h	(revision 104705)
+++ chrome/browser/upgrade_detector.h	(working copy)
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "base/timer.h"
+#include "chrome/browser/idle.h"
 #include "ui/gfx/image/image.h"
 
 class PrefService;
@@ -30,6 +31,7 @@
     UPGRADE_ANNOYANCE_ELEVATED,  // Yellow.
     UPGRADE_ANNOYANCE_HIGH,      // Red.
     UPGRADE_ANNOYANCE_SEVERE,    // Orange.
+    UPGRADE_ANNOYANCE_CRITICAL,  // Red exclamation mark.
   };
 
   // The two types of icons we know about.
@@ -45,8 +47,28 @@
 
   static void RegisterPrefs(PrefService* prefs);
 
-  bool notify_upgrade() { return notify_upgrade_; }
+  // Whether the user should be notified about an upgrade.
+  bool notify_upgrade() const { return notify_upgrade_; }
 
+  // Whether the upgrade is a critical upgrade (such as a zero-day update).
+  bool is_critical_update() const { return is_critical_upgrade_; }
+
+  // Notifify this object that the user has acknowledged the critical update
+  // so we don't need to complain about it for now.
+  void acknowledge_critical_update() {
+    critical_update_acknowledged_ = true;
+  }
+
+  // Whether the user has acknowledged the critical update.
+  bool critical_update_acknowledged() const {
+    return critical_update_acknowledged_;
+  }
+
+  // When the last upgrade was detected.
+  const base::Time& upgrade_detected_time() const {
+    return upgrade_detected_time_;
+  }
+
   // Retrieves the right icon ID based on the degree of severity (see
   // UpgradeNotificationAnnoyanceLevel, each level has an an accompanying icon
   // to go with it). |type| determines which class of icons the caller wants,
@@ -63,19 +85,32 @@
   // Sends out UPGRADE_RECOMMENDED notification and set notify_upgrade_.
   void NotifyUpgradeRecommended();
 
-  // Accessors.
-  const base::Time& upgrade_detected_time() const {
-    return upgrade_detected_time_;
-  }
-
   void set_upgrade_notification_stage(UpgradeNotificationAnnoyanceLevel stage) {
     upgrade_notification_stage_ = stage;
   }
 
+  // True if a critical update to Chrome has been installed, such as a zero-day
+  // fix.
+  bool is_critical_upgrade_;
+
+  // Whether the user has acknowledged the critical update.
+  bool critical_update_acknowledged_;
+
  private:
+  // Initiates an Idle check. See IdleCallback below.
+  void CheckIdle();
+
+  // The callback for the IdleCheck. Tells us whether Chrome has received any
+  // input events since the specified time.
+  void IdleCallback(IdleState state);
+
   // When the upgrade was detected.
   base::Time upgrade_detected_time_;
 
+  // A timer to check to see if we've been idle for long enough to show the
+  // critical warning. Should only be set if |is_critical_upgrade_| is true.
+  base::RepeatingTimer<UpgradeDetector> idle_check_timer_;
+
   // The stage at which the annoyance level for upgrade notifications is at.
   UpgradeNotificationAnnoyanceLevel upgrade_notification_stage_;