Convert enable_plugins to a buildflag header.

chrome/browser/extensions/component_loader.cc

 // 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.
 
 #include "chrome/browser/extensions/component_loader.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
@@ skipping 22 matching lines @@
 #include "components/crx_file/id_util.h"
 #include "components/version_info/version_info.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/plugin_service.h"
 #include "content/public/common/content_switches.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_l10n_util.h"
 #include "extensions/common/file_util.h"
 #include "extensions/common/manifest_constants.h"
+#include "ppapi/features/features.h"
 #include "printing/features/features.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 #if defined(OS_CHROMEOS)
 #include "ash/common/system/chromeos/devicetype_utils.h"
 #include "chromeos/chromeos_switches.h"
 #include "components/chrome_apps/grit/chrome_apps_resources.h"
 #include "components/user_manager/user_manager.h"
 #include "content/public/browser/site_instance.h"
@@ skipping 434 matching lines @@
 
   if (!skip_session_components) {
     AddWebStoreApp();
     AddChromeApp();
   }
 
   AddKeyboardApp();
 
   AddDefaultComponentExtensionsWithBackgroundPages(skip_session_components);
 
-#if defined(ENABLE_PLUGINS)
+#if BUILDFLAG(ENABLE_PLUGINS)
   Add(pdf_extension_util::GetManifest(),
       base::FilePath(FILE_PATH_LITERAL("pdf")));
 #endif
 }
 
 void ComponentLoader::AddDefaultComponentExtensionsForKioskMode(
     bool skip_session_components) {
   // Do not add component extensions that have background pages here -- add them
   // to AddDefaultComponentExtensionsWithBackgroundPagesForKioskMode.
 
   // No component extension for kiosk app launch splash screen.
   if (skip_session_components)
     return;
 
   // Component extensions needed for kiosk apps.
   AddFileManagerExtension();
 
   // Add virtual keyboard.
   AddKeyboardApp();
 
   AddDefaultComponentExtensionsWithBackgroundPagesForKioskMode();
 
-#if defined(ENABLE_PLUGINS)
+#if BUILDFLAG(ENABLE_PLUGINS)
   Add(pdf_extension_util::GetManifest(),
       base::FilePath(FILE_PATH_LITERAL("pdf")));
 #endif
 }
 
 void ComponentLoader::AddDefaultComponentExtensionsWithBackgroundPages(
     bool skip_session_components) {
   const base::CommandLine* command_line =
       base::CommandLine::ForCurrentProcess();
 
@@ skipping 152 matching lines @@
     return;  // Error already logged.
   std::string actual_extension_id =
       Add(std::move(manifest), root_directory, false);
   CHECK_EQ(extension_id, actual_extension_id);
   if (!done_cb.is_null())
     done_cb.Run();
 }
 #endif
 
 }  // namespace extensions