Add calculation of derived features for distillable page model

components/dom_distiller/core/BUILD.gn

 # 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.
 
 # GYP version: components/dom_distiller.gypi:dom_distiller_core
 source_set("core") {
   sources = [
     "../android/component_jni_registrar.cc",
     "../android/component_jni_registrar.h",
     "article_attachments_data.cc",
@@ skipping 18 matching lines @@
     "dom_distiller_constants.h",
     "dom_distiller_model.cc",
     "dom_distiller_model.h",
     "dom_distiller_observer.h",
     "dom_distiller_service.cc",
     "dom_distiller_service.h",
     "dom_distiller_store.cc",
     "dom_distiller_store.h",
     "feedback_reporter.cc",
     "feedback_reporter.h",
+    "page_features.cc",
+    "page_features.h",
     "task_tracker.cc",
     "task_tracker.h",
     "url_constants.cc",
     "url_constants.h",
     "url_utils.cc",
     "url_utils.h",
     "url_utils_android.cc",
     "url_utils_android.h",
     "viewer.cc",
     "viewer.h",
   ]
 
   public_deps = [
     "//components/dom_distiller/core/proto",
     "//third_party/dom_distiller_js:proto",
   ]
   deps = [
     "//base",
     "//base:prefs",
     "//components/leveldb_proto",
     "//components/pref_registry",
     "//components/resources",
     "//components/strings",
     "//net",
     "//skia",
     "//sync",
+    "//third_party/re2",
     "//ui/base",
     "//url",
   ]
 
   if (is_android) {
     sources += [
       "dom_distiller_service_android.cc",
       "dom_distiller_service_android.h",
     ]
     deps += [ ":jni_headers" ]
@@ skipping 27 matching lines @@
   testonly = true
   sources = [
     "article_entry_unittest.cc",
     "distilled_content_store_unittest.cc",
     "distilled_page_prefs_unittests.cc",
     "distiller_unittest.cc",
     "distiller_url_fetcher_unittest.cc",
     "dom_distiller_model_unittest.cc",
     "dom_distiller_service_unittest.cc",
     "dom_distiller_store_unittest.cc",
+    "page_features_unittest.cc",
     "task_tracker_unittest.cc",
     "url_utils_unittest.cc",
     "viewer_unittest.cc",
   ]
 
   deps = [
     ":core",
     ":test_support",
     "//base",
     "//components/leveldb_proto:test_support",
@@ skipping 11 matching lines @@
 
   generate_jni("jni_headers") {
     sources = [
       "../android/java/src/org/chromium/components/dom_distiller/core/DistilledPagePrefs.java",
       "../android/java/src/org/chromium/components/dom_distiller/core/DomDistillerService.java",
       "../android/java/src/org/chromium/components/dom_distiller/core/DomDistillerUrlUtils.java",
     ]
     jni_package = "dom_distiller_core"
   }
 }