Introduces a new MHTML generation parameter specifying different behvaior for cache-control headers.

content/public/common/mhtml_generation.cc

+// Copyright 2016 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 "content/public/common/mhtml_generation.h"
+
+#include "base/files/file_path.h"
+
+namespace content {
+
+MHTMLGenerationParams::MHTMLGenerationParams(const base::FilePath& file_path)
+    : file_path(file_path) {}
+
+namespace mhtml {
+
+blink::WebFrameSerializer::CacheControlPolicy toCacheControlPolicy(
+    MHTMLCacheControlPolicy mhtml_policy) {
+  switch (mhtml_policy) {
+    case MHTMLCacheControlPolicy::IGNORE:
+      return blink::WebFrameSerializer::CacheControlPolicyIgnore;
+    case MHTMLCacheControlPolicy::FAIL_FOR_NO_STORE_MAIN_FRAME:
+      return blink::WebFrameSerializer::
+          CacheControlPolicyFailForNoStoreMainFrame;
+    default:
+      NOTREACHED();
+      return blink::WebFrameSerializer::CacheControlPolicyIgnore;
+  }
+}
+
+}  // namespace mhtml
+
+}  // namespace content