Refactor VariationsSeedProcessor to add ProcessedStudy struct.

components/variations/processed_study.cc

+// Copyright 2013 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.
+
+#include "components/variations/processed_study.h"
+
+#include "components/variations/proto/study.pb.h"
+
+namespace chrome_variations {
+
+ProcessedStudy::ProcessedStudy(const Study* study,
+                               base::FieldTrial::Probability total_probability,
+                               bool is_expired)
+    : study(study),
+      total_probability(total_probability),
+      is_expired(is_expired) {
+}
+
+ProcessedStudy::~ProcessedStudy() {
+}
+
+}  // namespace chrome_variations