Replace c/b/nss_context by a KeyedService.

components/cert_database.gypi

Index: components/cert_database.gypi
diff --git a/components/os_crypt.gypi b/components/cert_database.gypi
similarity index 35%
copy from components/os_crypt.gypi
copy to components/cert_database.gypi
index 59654748280ec4adce1920b744ae02b5dd3e33df..0ad7be775d156845495892c42bcc9aeb59320e31 100644
--- a/components/os_crypt.gypi
+++ b/components/cert_database.gypi
@@ -5,41 +5,35 @@
 {
   'targets': [
     {
-      'target_name': 'os_crypt',
+      'target_name': 'cert_database',
       'type': 'static_library',
-      'include_dirs': [
-        '..',
-      ],
       'dependencies': [
         '../base/base.gyp:base',
         '../crypto/crypto.gyp:crypto',
+        '../net/net.gyp:net',
+      ],
+      'include_dirs': [
+        '..',
       ],
       'sources': [
-        'os_crypt/ie7_password_win.cc',
-        'os_crypt/ie7_password_win.h',
-        'os_crypt/keychain_password_mac.h',
-        'os_crypt/keychain_password_mac.mm',
-        'os_crypt/os_crypt.h',
-        'os_crypt/os_crypt_mac.mm',
-        'os_crypt/os_crypt_posix.cc',
-        'os_crypt/os_crypt_switches.cc',
-        'os_crypt/os_crypt_switches.h',
-        'os_crypt/os_crypt_win.cc',
+        'cert_database/cert_database_service.cc',
+        'cert_database/cert_database_service.h',
+        'cert_database/cert_database_service_io_part.cc',
+        'cert_database/cert_database_service_io_part.h',
+        'cert_database/cert_database_service_io_part_chromeos.cc',
+        'cert_database/cert_database_service_io_part_chromeos.h',
+        'cert_database/cert_database_service_io_part_linux.cc',
+        'cert_database/cert_database_service_io_part_linux.h',
       ],
       'conditions': [
-        ['OS=="mac"', {
-          'sources!': [
-            'os_crypt/os_crypt_posix.cc',
-          ],
-        }],
-      ],
-      'target_conditions': [
-        ['OS=="ios"', {
-          'sources/': [
-            ['include', '^os_crypt/keychain_password_mac\\.mm$'],
-            ['include', '^os_crypt/os_crypt_mac\\.mm$'],
-          ],
-        }],
+        ['chromeos==1', {
+           'sources!': [
+             'cert_database/cert_database_service_io_part_linux.cc' ],
+          }, { # chromeos==0
+           'sources!': [
+             'cert_database/cert_database_service_io_part_chromeos.cc'
+           ],
+          }],
       ],
     },
   ],