Re-instate ui/*compiled_resources*.gyp files

ui/file_manager/image_loader/compiled_resources.gyp

+# Copyright 2014 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': [
+    {
+      'target_name': 'background',
+      'variables': {
+        'depends': [
+          '../../webui/resources/js/assert.js',
+          '../file_manager/common/js/file_type.js',
+          '../file_manager/common/js/metrics_base.js',
+          '../file_manager/common/js/metrics.js',
+          '../file_manager/common/js/metrics_events.js',
+          '../file_manager/foreground/js/metadata/image_orientation.js',
+          'cache.js',
+          'image_loader.js',
+          'piex_loader.js',
+          'request.js',
+          'scheduler.js',
+        ],
+        'externs': [
+          '<(EXTERNS_DIR)/chrome_extensions.js',
+          '<(EXTERNS_DIR)/file_manager_private.js',
+          '<(EXTERNS_DIR)/metrics_private.js',
+          '../../../third_party/analytics/externs.js',
+        ],
+      },
+      'includes': [
+        '../compile_js.gypi',
+      ],
+    }
+  ],
+}