Reset registered events and dispatch runtime.onInstalled to all extensions when

chrome/browser/extensions/extension_prefs.cc

Index: chrome/browser/extensions/extension_prefs.cc
diff --git a/chrome/browser/extensions/extension_prefs.cc b/chrome/browser/extensions/extension_prefs.cc
index 3b536c0064e02ec4ec87ea3d52e3432c1f82d19b..15cd176595716c9e27ed13a4430de6317505c65b 100644
--- a/chrome/browser/extensions/extension_prefs.cc
+++ b/chrome/browser/extensions/extension_prefs.cc
@@ -7,6 +7,7 @@
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
+#include "base/version.h"
 #include "chrome/browser/extensions/admin_policy.h"
 #include "chrome/browser/extensions/api/omnibox/omnibox_api.h"
 #include "chrome/browser/extensions/extension_pref_store.h"
@@ -15,6 +16,7 @@
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/chrome_version_info.h"
 #include "chrome/common/extensions/extension_switch_utils.h"
 #include "chrome/common/extensions/manifest.h"
 #include "chrome/common/extensions/permissions/permission_set.h"
@@ -205,6 +207,9 @@ const char kMediaGalleryIdKey[] = "id";
 // Key for Media Gallery Permission Value.
 const char kMediaGalleryHasPermissionKey[] = "has_permission";
 
+// Key for what version chrome was last time the extension prefs were loaded.
+const char kExtensionsLastChromeVersion[] = "extensions.last_chrome_version";
+
 // Provider of write access to a dictionary storing extension prefs.
 class ScopedExtensionPrefUpdate : public DictionaryPrefUpdate {
  public:
@@ -960,6 +965,17 @@ void ExtensionPrefs::MigrateDisableReasons(
   }
 }
 
+void ExtensionPrefs::ClearRegisteredEvents() {
+  const DictionaryValue* extensions = prefs_->GetDictionary(kExtensionsPref);
+  if (!extensions)
+    return;
+
+  for (DictionaryValue::key_iterator it = extensions->begin_keys();
+       it != extensions->end_keys(); ++it) {
+    UpdateExtensionPref(*it, kRegisteredEvents, NULL);
+  }
+}
+
 PermissionSet* ExtensionPrefs::GetGrantedPermissions(
     const std::string& extension_id) {
   CHECK(Extension::IdIsValid(extension_id));
@@ -1015,6 +1031,26 @@ void ExtensionPrefs::SetActivePermissions(
       extension_id, kPrefActivePermissions, permissions);
 }
 
+bool ExtensionPrefs::CheckRegisteredEventsUpToDate() {
+  Version version;
+  if (prefs_->HasPrefPath(kExtensionsLastChromeVersion)) {
+    std::string version_str = prefs_->GetString(kExtensionsLastChromeVersion);
+    version = Version(version_str);
+  }
+
+  chrome::VersionInfo current_version_info;
+  std::string current_version = current_version_info.Version();
+  prefs_->SetString(kExtensionsLastChromeVersion, current_version);
+
+  // If there was no version string in prefs, assume we're out of date.
+  if (!version.IsValid() || version.IsOlderThan(current_version)) {
+    ClearRegisteredEvents();
+    return false;
+  }
+
+  return true;
+}
+
 std::set<std::string> ExtensionPrefs::GetRegisteredEvents(
     const std::string& extension_id) {
   std::set<std::string> events;
@@ -2140,6 +2176,9 @@ void ExtensionPrefs::RegisterUserPrefs(PrefService* prefs) {
                            PrefService::UNSYNCABLE_PREF);
   prefs->RegisterListPref(prefs::kExtensionAllowedInstallSites,
                           PrefService::UNSYNCABLE_PREF);
+  prefs->RegisterStringPref(kExtensionsLastChromeVersion,
+                            std::string(),  // default value
+                            PrefService::UNSYNCABLE_PREF);
 }
 
 ExtensionPrefs::ExtensionIds ExtensionPrefs::GetExtensionPrefAsVector(