Add is_srcdoc to FrameNavigationEntry and restore about::srcdoc URL.

content/browser/frame_host/frame_navigation_entry.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 CONTENT_BROWSER_FRAME_HOST_FRAME_NAVIGATION_ENTRY_H_
 #define CONTENT_BROWSER_FRAME_HOST_FRAME_NAVIGATION_ENTRY_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
@@ skipping 21 matching lines @@
  public:
   FrameNavigationEntry();
   FrameNavigationEntry(const std::string& frame_unique_name,
                        int64_t item_sequence_number,
                        int64_t document_sequence_number,
                        scoped_refptr<SiteInstanceImpl> site_instance,
                        scoped_refptr<SiteInstanceImpl> source_site_instance,
                        const GURL& url,
                        const Referrer& referrer,
                        const std::string& method,
-                       int64_t post_id);
+                       int64_t post_id,
+                       bool is_srcdoc);
 
   // Creates a copy of this FrameNavigationEntry that can be modified
   // independently from the original.
   FrameNavigationEntry* Clone() const;
 
   // Updates all the members of this entry.
   void UpdateEntry(const std::string& frame_unique_name,
                    int64_t item_sequence_number,
                    int64_t document_sequence_number,
                    SiteInstanceImpl* site_instance,
                    scoped_refptr<SiteInstanceImpl> source_site_instance,
                    const GURL& url,
                    const Referrer& referrer,
                    const std::vector<GURL>& redirect_chain,
                    const PageState& page_state,
                    const std::string& method,
-                   int64_t post_id);
+                   int64_t post_id,
+                   bool is_srcdoc);
 
   // The unique name of the frame this entry is for.  This is a stable name for
   // the frame based on its position in the tree and relation to other named
   // frames, which does not change after cross-process navigations or restores.
   // Only the main frame can have an empty name.
   //
   // This is unique relative to other frames in the same page, but not among
   // other pages (i.e., not globally unique).
   const std::string& frame_unique_name() const { return frame_unique_name_; }
   void set_frame_unique_name(const std::string& frame_unique_name) {
@@ skipping 57 matching lines @@
 
   // The id of the post corresponding to this navigation or -1 if the
   // navigation was not a POST.
   int64_t post_id() const { return post_id_; }
   void set_post_id(int64_t post_id) { post_id_ = post_id; }
 
   // The data sent during a POST navigation. Returns nullptr if the navigation
   // is not a POST.
   scoped_refptr<ResourceRequestBodyImpl> GetPostData() const;
 
+  // Whether the navigation is for an iframe with srcdoc attribute.
+  bool is_srcdoc() const { return is_srcdoc_; }
+
  private:
   friend class base::RefCounted<FrameNavigationEntry>;
   virtual ~FrameNavigationEntry();
 
   // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
   // Add all new fields to |UpdateEntry|.
   // TODO(creis): These fields have implications for session restore.  This is
   // currently managed by NavigationEntry, but the logic will move here.
   // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
 
   // See the accessors above for descriptions.
   std::string frame_unique_name_;
   int64_t item_sequence_number_;
   int64_t document_sequence_number_;
   scoped_refptr<SiteInstanceImpl> site_instance_;
   // This member is cleared at commit time and is not persisted.
   scoped_refptr<SiteInstanceImpl> source_site_instance_;
   GURL url_;
   Referrer referrer_;
   // This is used when transferring a pending entry from one process to another.
   // We also send the main frame's redirect chain through session sync for
   // offline analysis.
   // It is preserved after commit but should not be persisted.
   std::vector<GURL> redirect_chain_;
   // TODO(creis): Change this to FrameState.
   PageState page_state_;
   std::string method_;
   int64_t post_id_;
+  bool is_srcdoc_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameNavigationEntry);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_FRAME_NAVIGATION_ENTRY_H_