Remove extension-to-component migration mechanism

chrome/browser/prefs/browser_prefs.cc

 // Copyright 2012 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.
 
 #include "chrome/browser/prefs/browser_prefs.h"
 
 #include <string>
 
 #include "base/files/file_util.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 110 matching lines @@
 #if BUILDFLAG(ENABLE_BACKGROUND)
 #include "chrome/browser/background/background_mode_manager.h"
 #endif
 
 #if BUILDFLAG(ENABLE_EXTENSIONS)
 #include "chrome/browser/accessibility/animation_policy_prefs.h"
 #include "chrome/browser/apps/shortcut_manager.h"
 #include "chrome/browser/extensions/activity_log/activity_log.h"
 #include "chrome/browser/extensions/api/commands/command_service.h"
 #include "chrome/browser/extensions/api/tabs/tabs_api.h"
-#include "chrome/browser/extensions/component_migration_helper.h"
 #include "chrome/browser/extensions/extension_web_ui.h"
 #include "chrome/browser/extensions/launch_util.h"
 #include "chrome/browser/signin/easy_unlock_service.h"
 #include "chrome/browser/ui/toolbar/toolbar_actions_bar.h"
 #include "chrome/browser/ui/webui/extensions/extension_settings_handler.h"
 #include "extensions/browser/api/runtime/runtime_api.h"
 #include "extensions/browser/extension_prefs.h"
 #endif  // BUILDFLAG(ENABLE_EXTENSIONS)
 
 #if BUILDFLAG(ENABLE_PLUGIN_INSTALLATION)
@@ skipping 383 matching lines @@
 
   policy::URLBlacklistManager::RegisterProfilePrefs(registry);
   certificate_transparency::CTPolicyManager::RegisterPrefs(registry);
 
 #if BUILDFLAG(ENABLE_EXTENSIONS)
   EasyUnlockService::RegisterProfilePrefs(registry);
   ExtensionWebUI::RegisterProfilePrefs(registry);
   RegisterAnimationPolicyPrefs(registry);
   ToolbarActionsBar::RegisterProfilePrefs(registry);
   extensions::ActivityLog::RegisterProfilePrefs(registry);
-  extensions::ComponentMigrationHelper::RegisterPrefs(registry);
   extensions::ExtensionPrefs::RegisterProfilePrefs(registry);
   extensions::launch_util::RegisterProfilePrefs(registry);
   extensions::RuntimeAPI::RegisterPrefs(registry);
 #endif  // BUILDFLAG(ENABLE_EXTENSIONS)
 
 #if BUILDFLAG(ENABLE_EXTENSIONS) && !defined(OS_ANDROID)
   // The extension welcome notification requires a build that enables extensions
   // and notifications, and uses the UI message center.
   ExtensionWelcomeNotification::RegisterProfilePrefs(registry);
 #endif
@@ skipping 188 matching lines @@
   if (!hide_pref->IsDefaultValue()) {
     bool hide_pref_value =
         profile_prefs->GetBoolean(prefs::kHideFullscreenToolbar);
     profile_prefs->SetBoolean(prefs::kShowFullscreenToolbar, !hide_pref_value);
     profile_prefs->ClearPref(prefs::kHideFullscreenToolbar);
   }
 #endif
 
   // Added 12/1015.
   profile_prefs->ClearPref(kURLsToRestoreOnStartupOld);
   profile_prefs->ClearPref(kRestoreStartupURLsMigrationTime);

[gab, 2017/02/08 17:47:30]

Remove year+ old migrations (there is a rolling cleanup policy here since no one
gets back to theirs a year later).

[takumif, 2017/02/08 18:12:14]

Done.

 
   // Added 12/2015.
   profile_prefs->ClearPref(kRestoreOnStartupMigrated);
 
 #if defined(USE_AURA)
   // Added 1/2016
   profile_prefs->ClearPref(kFlingMaxCancelToDownTimeInMs);
   profile_prefs->ClearPref(kFlingMaxTapGapTimeInMs);
   profile_prefs->ClearPref(kTabScrubActivationDelayInMs);
   profile_prefs->ClearPref(kMaxSeparationForGestureTouchesInPixels);
@@ skipping 34 matching lines @@
   profile_prefs->ClearPref(kNetworkPredictionEnabled);
   profile_prefs->ClearPref(kDisableSpdy);
 
   // Added 8/2016.
   profile_prefs->ClearPref(kStaticEncodings);
   profile_prefs->ClearPref(kRecentlySelectedEncoding);
 
   // Added 9/2016.
   profile_prefs->ClearPref(kWebKitUsesUniversalDetector);
   profile_prefs->ClearPref(kWebKitAllowDisplayingInsecureContent);
+
+#if BUILDFLAG(ENABLE_EXTENSIONS)
+  // Added 2/2017.
+  profile_prefs->ClearPref(prefs::kToolbarMigratedComponentActionStatus);
+#endif
 }
 
 }  // namespace chrome