Convert enable_plugins to a buildflag header.

chrome/common/pref_names.h

 // Copyright (c) 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.
 
 // Constants for the names of various preferences, for easier changing.
 
 #ifndef CHROME_COMMON_PREF_NAMES_H_
 #define CHROME_COMMON_PREF_NAMES_H_
 
 #include <stddef.h>
 
 #include "build/build_config.h"
 #include "chrome/common/features.h"
 #include "extensions/features/features.h"
+#include "ppapi/features/features.h"
 
 namespace prefs {
 
 // Profile prefs. Please add Local State prefs below instead.
 #if defined(OS_CHROMEOS) && BUILDFLAG(ENABLE_APP_LIST)
 extern const char kArcApps[];
 extern const char kArcBackupRestoreEnabled[];
 extern const char kArcEnabled[];
 extern const char kArcPolicyCompliant[];
 extern const char kArcTermsAccepted[];
@@ skipping 307 matching lines @@
 extern const char kCurrentThemeDisplayProperties[];
 extern const char kExtensionsUIDeveloperMode[];
 extern const char kExtensionsUIDismissedADTPromo[];
 extern const char kExtensionCommands[];
 extern const char kPluginsLastInternalDirectory[];
 extern const char kPluginsPluginsList[];
 extern const char kPluginsDisabledPlugins[];
 extern const char kPluginsDisabledPluginsExceptions[];
 extern const char kPluginsEnabledPlugins[];
 extern const char kPluginsAlwaysOpenPdfExternally[];
-#if defined(ENABLE_PLUGINS)
+#if BUILDFLAG(ENABLE_PLUGINS)
 extern const char kPluginsShowDetails[];
 #endif
 extern const char kPluginsAllowOutdated[];
 extern const char kPluginsAlwaysAuthorize[];
 #if BUILDFLAG(ENABLE_PLUGIN_INSTALLATION)
 extern const char kPluginsMetadata[];
 extern const char kPluginsResourceCacheUpdate[];
 #endif
 extern const char kDefaultBrowserLastDeclined[];
 extern const char kResetCheckDefaultBrowser[];
 extern const char kDefaultBrowserSettingEnabled[];
 #if defined(OS_MACOSX)
 extern const char kShowUpdatePromotionInfoBar[];
 #endif
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
 extern const char kUseCustomChromeFrame[];
 #endif
 extern const char kBackShortcutBubbleShownCount[];
-#if defined(ENABLE_PLUGINS)
+#if BUILDFLAG(ENABLE_PLUGINS)
 extern const char kContentSettingsPluginWhitelist[];
 #endif
 extern const char kPartitionDefaultZoomLevel[];
 extern const char kPartitionPerHostZoomLevels[];
 
 #if !defined(OS_ANDROID)
 extern const char kPinnedTabs[];
 #endif
 
 extern const char kDisable3DAPIs[];
@@ skipping 473 matching lines @@
 
 #if defined(OS_ANDROID)
 extern const char kSearchGeolocationDisclosureDismissed[];
 extern const char kSearchGeolocationDisclosureShownCount[];
 extern const char kSearchGeolocationDisclosureLastShowDate[];
 #endif
 
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_