Move classes to //components/ntp_tiles.

components/ntp_tiles.gypi

 # Copyright 2016 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.
 
 {
   'targets': [
     {
       # GN version: //components/ntp_tiles
       'target_name': 'ntp_tiles',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         '../base/base.gyp:base',
+        'history_core_browser',
+        'pref_registry',
+        'search_engines',
+        'suggestions',
+        'variations',
       ],
       'sources': [
+        'ntp_tiles/most_visited_sites.cc',
+        'ntp_tiles/most_visited_sites.h',
+        'ntp_tiles/popular_sites.cc',
+        'ntp_tiles/popular_sites.h',
         'ntp_tiles/pref_names.h',
         'ntp_tiles/pref_names.cc',
         'ntp_tiles/switches.h',
         'ntp_tiles/switches.cc',
       ],
+      'conditions': [
+        ['OS != "ios"', {
+          'dependencies': [
+            'safe_json',
+          ],
+        }],
+      ],
     },
   ],
+
+  'conditions': [
+    ['OS == "android"', {
+      'targets': [
+        {
+          # GN: //components/ntp_tiles:ntp_tiles_enums_java
+          'target_name': 'ntp_tiles_enums_java',
+          'type': 'none',
+          'variables': {
+            'source_file': 'ntp_tiles/most_visited_sites.cc',
+          },
+          'includes': [
+            '../build/android/java_cpp_enum.gypi'
+          ],
+        },
+      ],
+    }],
+  ],
 }