Move enable extensions define to a build flag.

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index bebdc7bf6ef5e6e4ec3d38228c96e4b2b796266c..10711a79ba99c0fe45020996027e5947ed343331 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -68,6 +68,7 @@
 #include "content/public/common/content_switches.h"
 #include "content/public/common/feature_h264_with_openh264_ffmpeg.h"
 #include "content/public/common/features.h"
+#include "extensions/features/features.h"
 #include "gin/public/gin_features.h"
 #include "media/audio/audio_features.h"
 #include "media/base/media_switches.h"
@@ -104,7 +105,7 @@
 #include "ui/app_list/app_list_switches.h"
 #endif  // ENABLE_APP_LIST
 
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
 #include "extensions/common/switches.h"
 #endif  // ENABLE_EXTENSIONS
 
@@ -721,7 +722,7 @@ const FeatureEntry kFeatureEntries[] = {
      IDS_FLAGS_NACL_DEBUG_MASK_DESCRIPTION, kOsDesktop,
      MULTI_VALUE_TYPE(kNaClDebugMaskChoices)},
 #endif  // DISABLE_NACL
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
     {"extension-apis", IDS_FLAGS_EXPERIMENTAL_EXTENSION_APIS_NAME,
      IDS_FLAGS_EXPERIMENTAL_EXTENSION_APIS_DESCRIPTION, kOsDesktop,
      SINGLE_VALUE_TYPE(extensions::switches::kEnableExperimentalExtensionApis)},
@@ -732,7 +733,7 @@ const FeatureEntry kFeatureEntries[] = {
     {"enable-fast-unload", IDS_FLAGS_FAST_UNLOAD_NAME,
      IDS_FLAGS_FAST_UNLOAD_DESCRIPTION, kOsAll,
      SINGLE_VALUE_TYPE(switches::kEnableFastUnload)},
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
     {"enable-app-window-controls", IDS_FLAGS_APP_WINDOW_CONTROLS_NAME,
      IDS_FLAGS_APP_WINDOW_CONTROLS_DESCRIPTION, kOsDesktop,
      SINGLE_VALUE_TYPE(extensions::switches::kEnableAppWindowControls)},
@@ -830,7 +831,7 @@ const FeatureEntry kFeatureEntries[] = {
      IDS_FLAGS_EXPERIMENTAL_WEB_PLATFORM_FEATURES_NAME,
      IDS_FLAGS_EXPERIMENTAL_WEB_PLATFORM_FEATURES_DESCRIPTION, kOsAll,
      SINGLE_VALUE_TYPE(switches::kEnableExperimentalWebPlatformFeatures)},
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
     {"enable-ble-advertising-in-apps",
      IDS_FLAGS_BLE_ADVERTISING_IN_EXTENSIONS_NAME,
      IDS_FLAGS_BLE_ADVERTISING_IN_EXTENSIONS_DESCRIPTION, kOsCrOS,
@@ -1310,7 +1311,7 @@ const FeatureEntry kFeatureEntries[] = {
      SINGLE_DISABLE_VALUE_TYPE(
          views::switches::kDisableViewsRectBasedTargeting)},
 #endif  // TOOLKIT_VIEWS
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
     {"enable-apps-show-on-first-paint", IDS_FLAGS_APPS_SHOW_ON_FIRST_PAINT_NAME,
      IDS_FLAGS_APPS_SHOW_ON_FIRST_PAINT_DESCRIPTION, kOsDesktop,
      SINGLE_VALUE_TYPE(extensions::switches::kEnableAppsShowOnFirstPaint)},
@@ -1381,7 +1382,7 @@ const FeatureEntry kFeatureEntries[] = {
      IDS_FLAGS_EXTENSION_CONTENT_VERIFICATION_NAME,
      IDS_FLAGS_EXTENSION_CONTENT_VERIFICATION_DESCRIPTION, kOsDesktop,
      MULTI_VALUE_TYPE(kExtensionContentVerificationChoices)},
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
     {"extension-active-script-permission",
      IDS_FLAGS_USER_CONSENT_FOR_EXTENSION_SCRIPTS_NAME,
      IDS_FLAGS_USER_CONSENT_FOR_EXTENSION_SCRIPTS_DESCRIPTION, kOsAll,
@@ -1397,7 +1398,7 @@ const FeatureEntry kFeatureEntries[] = {
     {"enable-hotword-hardware", IDS_FLAGS_EXPERIMENTAL_HOTWORD_HARDWARE_NAME,
      IDS_FLAGS_EXPERIMENTAL_HOTWORD_HARDWARE_DESCRIPTION, kOsCrOS,
      SINGLE_VALUE_TYPE(switches::kEnableExperimentalHotwordHardware)},
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
     {"enable-embedded-extension-options",
      IDS_FLAGS_EMBEDDED_EXTENSION_OPTIONS_NAME,
      IDS_FLAGS_EMBEDDED_EXTENSION_OPTIONS_DESCRIPTION, kOsDesktop,
@@ -1411,7 +1412,7 @@ const FeatureEntry kFeatureEntries[] = {
     {"drop-sync-credential", IDS_FLAGS_DROP_SYNC_CREDENTIAL_NAME,
      IDS_FLAGS_DROP_SYNC_CREDENTIAL_DESCRIPTION, kOsAll,
      FEATURE_VALUE_TYPE(password_manager::features::kDropSyncCredential)},
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
     {"enable-extension-action-redesign",
      IDS_FLAGS_EXTENSION_ACTION_REDESIGN_NAME,
      IDS_FLAGS_EXTENSION_ACTION_REDESIGN_DESCRIPTION, kOsDesktop,
@@ -1757,7 +1758,7 @@ const FeatureEntry kFeatureEntries[] = {
     {"force-ui-direction", IDS_FLAGS_FORCE_UI_DIRECTION_NAME,
      IDS_FLAGS_FORCE_UI_DIRECTION_DESCRIPTION, kOsAll,
      MULTI_VALUE_TYPE(kForceUIDirectionChoices)},
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
     {"enable-md-extensions", IDS_FLAGS_ENABLE_MATERIAL_DESIGN_EXTENSIONS_NAME,
      IDS_FLAGS_ENABLE_MATERIAL_DESIGN_EXTENSIONS_DESCRIPTION, kOsDesktop,
      FEATURE_VALUE_TYPE(features::kMaterialDesignExtensions)},
@@ -1830,7 +1831,7 @@ const FeatureEntry kFeatureEntries[] = {
      IDS_FLAG_DISABLE_AUDIO_FOR_DESKTOP_SHARE,
      IDS_FLAG_DISABLE_AUDIO_FOR_DESKTOP_SHARE_DESCRIPTION, kOsAll,
      SINGLE_VALUE_TYPE(switches::kDisableAudioSupportForDesktopShare)},
-#if defined(ENABLE_EXTENSIONS)
+#if BUILDFLAG(ENABLE_EXTENSIONS)
     {"tab-for-desktop-share", IDS_FLAG_DISABLE_TAB_FOR_DESKTOP_SHARE,
      IDS_FLAG_DISABLE_TAB_FOR_DESKTOP_SHARE_DESCRIPTION, kOsAll,
      SINGLE_VALUE_TYPE(extensions::switches::kDisableTabForDesktopShare)},