GN chrome/common build, rename enable_printing.

chrome/browser/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//tools/grit/grit_rule.gni")
 
 about_credits_file = "$target_gen_dir/about_credits.html"
@@ skipping 386 matching lines @@
       sources += rebase_path(
           gypi_values.chrome_browser_non_android_notifications_sources,
           ".", "//chrome")
     }
   }
   if (enable_themes) {
     sources += rebase_path(gypi_values.chrome_browser_themes_sources,
                            ".", "//chrome")
   }
 
-  if (enable_printing != 0) {
+  if (printing_mode != 0) {
     # Some form of printing support.
     sources += rebase_path(gypi_values.chrome_browser_basic_printing_sources,
                            ".", "//chrome")
     deps += [
       #"../printing/printing.gyp:printing",  TODO(GYP)
     ]
     if (is_win && win_pdf_metafile_for_printing) {
       sources += rebase_path(gypi_values.chrome_browser_printing_emf_sources,
                              ".", "//chrome")
     }
-    if (enable_printing == 1) {
+    if (printing_mode == 1) {
       # Full printing on top of the above.
       sources += rebase_path(gypi_values.chrome_browser_full_printing_sources,
                              ".", "//chrome")
-    } else if (enable_printing == 2) {
+    } else if (printing_mode == 2) {
       # Partial-only printing support.
       sources += rebase_path(
           gypi_values.chrome_browser_basic_only_printing_sources,
           ".", "//chrome")
     }
   }
   if (enable_captive_portal_detection) {
     sources += rebase_path(gypi_values.chrome_browser_captive_portal_sources,
                            ".", "//chrome")
   }
@@ skipping 222 matching lines @@
 # TODO(GYP) write internal action
 if (false) {  #if (is_chrome_branded) {
   action("chrome_internal_resources_gen") {
     # TODO(GYP)
   }
 } else {
   group("chrome_internal_resources_gen") {
     # Empty placeholder.
   }
 }