import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

toolkit/mozapps/update/common/sources.mozbuild

@@ -0,0 +1,28 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+sources = []
+
+if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'windows':
+    sources += [
+        'pathhash.cpp',
+        'uachelper.cpp',
+        'updatehelper.cpp',
+    ]
+    if CONFIG['MOZ_MAINTENANCE_SERVICE']:
+        sources += [
+            'certificatecheck.cpp',
+            'registrycertificates.cpp',
+        ]
+        OS_LIBS += [
+            'crypt32',
+            'wintrust',
+        ]
+
+sources += [
+    'readstrings.cpp',
+    'updatecommon.cpp',
+]
+
+SOURCES += sorted(['%s/%s' % (srcdir, s) for s in sources])