Allow printing component to be removed completely

content/content_browser.gypi

 # 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.
 
 {
   'dependencies': [
     'browser/speech/proto/speech_proto.gyp:speech_proto',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
@@ skipping 1247 matching lines @@
         ['include', '^browser/download/download_create_info\\.cc$'],
         ['include', '^browser/notification_service_impl\\.cc$'],
         ['include', '^browser/user_metrics\\.cc$'],
         ['include', '^browser/web_contents/navigation_entry_impl\\.cc$'],
       ],
     }, {  # OS!="ios"
       'dependencies': [
         'browser/devtools/devtools_resources.gyp:devtools_resources',
         '../cc/cc.gyp:cc',
         '../net/net.gyp:http_server',
-        '../printing/printing.gyp:printing',
         '../third_party/leveldatabase/leveldatabase.gyp:leveldatabase',
         '../ui/surface/surface.gyp:surface',
         '../webkit/common/webkit_common.gyp:webkit_common',
         '../webkit/storage_browser.gyp:webkit_storage_browser',
         '../webkit/storage_common.gyp:webkit_storage_common',
         '../webkit/webkit_resources.gyp:webkit_resources',
         '../webkit/webkit_resources.gyp:webkit_strings',
       ],
     }],
+    ['enable_printing!=0', {
+      'dependencies': [
+        '../printing/printing.gyp:printing',
+      ],
+    }],
     ['OS!="ios" and chrome_multiple_dll!=1', {
       'dependencies': [
         '../third_party/WebKit/public/blink.gyp:blink',
       ],
     }],
     ['OS!="mac" and OS!="ios"', {
       'dependencies': [
         '../sandbox/sandbox.gyp:sandbox',
       ],
     }],
@@ skipping 266 matching lines @@
         ['exclude', '^browser/speech/input_tag_speech_dispatcher_host\\.(cc|h)$'],
       ],
     }, {  # input_speech==1
       'dependencies': [
         '../third_party/flac/flac.gyp:libflac',
         '../third_party/speex/speex.gyp:libspeex',
       ],
     }],
   ],
 }