Remove popup overlay from MHTML when requested

components/offline_pages/core/offline_page_client_policy.h

 // 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.
 
 #ifndef COMPONENTS_OFFLINE_PAGES_CORE_OFFLINE_PAGE_CLIENT_POLICY_H_
 #define COMPONENTS_OFFLINE_PAGES_CORE_OFFLINE_PAGE_CLIENT_POLICY_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 37 matching lines @@
 // The struct describing feature set of the offline pages.
 struct FeaturePolicy {
   // Whether pages are shown in download ui.
   bool is_supported_by_download;
   // Whether pages are shown in recent tabs ui.
   bool is_supported_by_recent_tabs;
   // Whether pages should only be viewed in the tab they were generated in.
   bool only_shown_in_original_tab;
   // Whether pages are removed on user-initiated cache reset. Defaults to true.
   bool is_removed_on_cache_reset;
+  // Whether to remove popup overlay that obstructs viewing normal content.
+  bool remove_popup_overlay;
 
   FeaturePolicy()
       : is_supported_by_download(false),
         is_supported_by_recent_tabs(false),
         only_shown_in_original_tab(false),
-        is_removed_on_cache_reset(true){};
+        is_removed_on_cache_reset(true),
+        remove_popup_overlay(false) {}
 };
 
 // The struct describing policies for various namespaces (Bookmark, Last-N etc.)
 // used by offline page model. The name_space is supposed to be key, so that
 // it's sufficient to compare name_space only when doing comparisons.
 struct OfflinePageClientPolicy {
   // Namespace to which the policy applied.
   std::string name_space;
 
   // Policy to control the lifetime of a page generated by this namespace.
@@ skipping 63 matching lines @@
     return *this;
   }
 
   OfflinePageClientPolicyBuilder& SetIsOnlyShownInOriginalTab(
       const bool only_shown_in_original_tab) {
     policy_.feature_policy.only_shown_in_original_tab =
         only_shown_in_original_tab;
     return *this;
   }
 
+  OfflinePageClientPolicyBuilder& SetRemovePopupOverlay(
+      const bool remove_popup_overlay) {
+    policy_.feature_policy.remove_popup_overlay = remove_popup_overlay;
+    return *this;
+  }
+
  private:
   OfflinePageClientPolicy policy_;
 
   DISALLOW_COPY_AND_ASSIGN(OfflinePageClientPolicyBuilder);
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_CORE_OFFLINE_PAGE_CLIENT_POLICY_H_