Revert 284508 "GN chrome/common build, rename enable_printing."

trunk/src/chrome/browser/ui/BUILD.gn

Index: trunk/src/chrome/browser/ui/BUILD.gn
===================================================================
--- trunk/src/chrome/browser/ui/BUILD.gn	(revision 284516)
+++ trunk/src/chrome/browser/ui/BUILD.gn	(working copy)
@@ -126,7 +126,7 @@
     deps += [ "//net" ]
   }
 
-  if (printing_mode != 0) {
+  if (enable_printing != 0) {
     deps += [ "//printing" ]
   }
 
@@ -258,7 +258,7 @@
   if (!enable_themes) {
     sources -= [ "webui/theme_source.cc" ]
   }
-  if (printing_mode == 1) {
+  if (enable_printing == 1) {
     sources += rebase_path(gypi_values.chrome_browser_ui_print_preview_sources,
                            ".", "//chrome")
   }