Remove ENABLE_MESSAGE_CENTER

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index f9a53b0f1c8fad6a4720973812ab3ef0e2efb5d0..fbb7aa85c21384eb7236aff619a3130a55b037b9 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -156,13 +156,6 @@
             'enable_app_list%': 0,
           }],
 
-          # Enable Message Center only on ChromeOS, Windows, and Mac for now.
-          ['use_ash==1 or OS=="win" or OS=="mac"', {
-            'enable_message_center%': 1,
-          }, {
-            'enable_message_center%': 0,
-          }],
-
           ['use_aura==1 or (OS!="win" and OS!="mac" and OS!="ios" and OS!="android")', {
             'use_default_render_theme%': 1,
           }, {
@@ -188,7 +181,6 @@
       'google_tv%': '<(google_tv)',
       'inside_chromium_build%': '<(inside_chromium_build)',
       'enable_app_list%': '<(enable_app_list)',
-      'enable_message_center%': '<(enable_message_center)',
       'use_default_render_theme%': '<(use_default_render_theme)',
       'buildtype%': '<(buildtype)',
       'arm_version%': '<(arm_version)',
@@ -788,7 +780,6 @@
     'gyp_managed_install%': 0,
     'google_tv%': '<(google_tv)',
     'enable_app_list%': '<(enable_app_list)',
-    'enable_message_center%': '<(enable_message_center)',
     'use_default_render_theme%': '<(use_default_render_theme)',
     'enable_settings_app%': '<(enable_settings_app)',
     'use_official_google_api_keys%': '<(use_official_google_api_keys)',
@@ -2171,9 +2162,6 @@
       ['enable_app_list==1', {
         'defines': ['ENABLE_APP_LIST=1'],
       }],
-      ['enable_message_center==1', {
-        'defines': ['ENABLE_MESSAGE_CENTER=1'],
-      }],
       ['enable_settings_app==1', {
         'defines': ['ENABLE_SETTINGS_APP=1'],
       }],