Move printing defines to buildflag system.

chrome/common/chrome_features.cc

 // Copyright 2016 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/common/chrome_features.h"
 
 namespace features {
 
 // All features in alphabetical order.
 
@@ skipping 115 matching lines @@
     "OverrideYouTubeFlashEmbed", base::FEATURE_ENABLED_BY_DEFAULT};
 
 #if defined(ENABLE_PLUGINS)
 // Prefer HTML content by hiding Flash from the list of plugins.
 // https://crbug.com/626728
 const base::Feature kPreferHtmlOverPlugins{"PreferHtmlOverPlugins",
                                            base::FEATURE_DISABLED_BY_DEFAULT};
 #endif
 
 // Enables the Print Scaling feature in print preview.
-#if defined(ENABLE_PRINT_PREVIEW)
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
 const base::Feature kPrintScaling{"PrintScaling",
                                   base::FEATURE_DISABLED_BY_DEFAULT};
 #endif
 
 // Enables or disables push subscriptions keeping Chrome running in the
 // background when closed.
 const base::Feature kPushMessagingBackgroundMode{
     "PushMessagingBackgroundMode", base::FEATURE_DISABLED_BY_DEFAULT};
 
 #if defined(OS_CHROMEOS)
@@ skipping 44 matching lines @@
 // Enables or disables PIN quick unlock settings integration.
 const base::Feature kQuickUnlockPin{"QuickUnlockPin",
                                     base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Enables or disables emoji, handwriting and voice input on opt-in IME menu.
 const base::Feature kEHVInputOnImeMenu{"EmojiHandwritingVoiceInput",
                                        base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace features