Add ENABLE_PRINTING and disable it on Android.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index b48380fbee8fd4c1b3983c0353d8bf56ec0b9c88..16192443cc0fe48a039e8799f9a9edaaef40d624 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -4618,6 +4618,12 @@
             ['exclude', '^browser/automation/'],
           ],
         }],
+        ['enable_printing!=1', {
+          'sources/': [
+            ['exclude', '^browser/printing/'],
+            ['exclude', '^browser/ui/webui/print_preview/'],
+          ],
+        }],
         ['enable_session_service!=1', {
           'sources!': [
             'browser/sessions/session_restore.cc',
@@ -4679,7 +4685,6 @@
             ['exclude', '^browser/captive_portal/'],
             ['exclude', '^browser/chrome_to_mobile'],
             ['exclude', '^browser/importer/'],
-            ['exclude', '^browser/printing/'],
             ['exclude', '^browser/ui/panels/'],
             ['exclude', '^browser/ui/tabs/'],
             ['exclude', '^browser/ui/toolbar/'],
@@ -4690,7 +4695,6 @@
             ['exclude', '^browser/ui/webui/inspect_'],
             ['exclude', '^browser/ui/webui/options'],
             ['exclude', '^browser/ui/webui/options2'],
-            ['exclude', '^browser/ui/webui/print_preview/'],
             ['exclude', '^browser/ui/webui/signin/'],
             ['exclude', '^browser/ui/webui/sync_promo'],
             ['exclude', '^browser/usb/'],