Add feature extraction for distillability to Blink

third_party/WebKit/public/platform/WebDistillability.h

+// Copyright 2015 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.
+
+#ifndef WebDistillability_h
+#define WebDistillability_h
+
+namespace blink {
+
+struct WebDistillabilityFeatures {
+    bool openGraph;
+    unsigned numElements;
+    unsigned numAnchors;
+    unsigned numForms;
+    unsigned numTextInput;
+    unsigned numPasswordInput;
+    unsigned numPPRE;
+    unsigned innerTextLength;
+    unsigned textContentLength;
+    double mozScore;
+    double mozScoreAllSqrt;
+    double mozScoreAllLinear;
+};
+
+} // namespace blink
+
+#endif // WebDistillability_h