Add item and document sequence numbers to FrameNavigationEntry.

content/browser/frame_host/navigation_entry_impl.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 "content/browser/frame_host/navigation_entry_impl.h"
 
 #include <queue>
 
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
@@ skipping 76 matching lines @@
                           ui::PAGE_TRANSITION_LINK, false) {
 }
 
 NavigationEntryImpl::NavigationEntryImpl(SiteInstanceImpl* instance,
                                          int page_id,
                                          const GURL& url,
                                          const Referrer& referrer,
                                          const base::string16& title,
                                          ui::PageTransition transition_type,
                                          bool is_renderer_initiated)
-    : frame_tree_(
-          new TreeNode(new FrameNavigationEntry(-1, instance, url, referrer))),
+    : frame_tree_(new TreeNode(
+          new FrameNavigationEntry(-1, -1, -1, instance, url, referrer))),
       unique_id_(GetUniqueIDInConstructor()),
       bindings_(kInvalidBindings),
       page_type_(PAGE_TYPE_NORMAL),
       update_virtual_url_with_url_(false),
       title_(title),
       page_id_(page_id),
       transition_type_(transition_type),
       has_post_data_(false),
       post_id_(-1),
       restore_type_(RESTORE_NONE),
@@ skipping 388 matching lines @@
   set_frame_tree_node_id(-1);
 
 #if defined(OS_ANDROID)
   // Reset the time stamp so that the metrics are not reported if this entry is
   // loaded again in the future.
   set_intent_received_timestamp(base::TimeTicks());
 #endif
 }
 
 void NavigationEntryImpl::AddOrUpdateFrameEntry(FrameTreeNode* frame_tree_node,
+                                                int64 item_sequence_number,
+                                                int64 document_sequence_number,
                                                 SiteInstanceImpl* site_instance,
                                                 const GURL& url,
                                                 const Referrer& referrer,
                                                 const PageState& page_state) {
   // We should already have a TreeNode for the parent node by the time this node
   // commits.  Find it first.
   DCHECK(frame_tree_node->parent());
   NavigationEntryImpl::TreeNode* parent_node =
       FindFrameEntry(frame_tree_node->parent());
   if (!parent_node) {
     // The renderer should not send a commit for a subframe before its parent.
     // However, we may see commits of subframes when their parent or ancestor is
     // still the initial about:blank page, and we don't currently keep a
     // FrameNavigationEntry for that.  We ignore such commits, similar to how we
     // handle them at the top level.
     // TODO(creis): Consider creating FNEs for initial about:blank commits.
     return;
   }
 
   // Now check whether we have a TreeNode for the node itself.
   int frame_tree_node_id = frame_tree_node->frame_tree_node_id();
   for (TreeNode* child : parent_node->children) {
     if (child->frame_entry->frame_tree_node_id() == frame_tree_node_id) {
       // Update the existing FrameNavigationEntry (e.g., for replaceState).
-      child->frame_entry->UpdateEntry(site_instance, url, referrer, page_state);
+      child->frame_entry->UpdateEntry(item_sequence_number,
+                                      document_sequence_number, site_instance,
+                                      url, referrer, page_state);
       return;
     }
   }
 
   // No entry exists yet, so create a new one unless it's for about:blank.
   // Unordered list, since we expect to look up entries by frame sequence number
   // or unique name.
   if (url == GURL(url::kAboutBlankURL))
     return;
   FrameNavigationEntry* frame_entry = new FrameNavigationEntry(
-      frame_tree_node_id, site_instance, url, referrer);
+      frame_tree_node_id, item_sequence_number, document_sequence_number,
+      site_instance, url, referrer);
   frame_entry->set_page_state(page_state);
   parent_node->children.push_back(
       new NavigationEntryImpl::TreeNode(frame_entry));
 }
 
-bool NavigationEntryImpl::HasFrameEntry(FrameTreeNode* frame_tree_node) const {
-  return FindFrameEntry(frame_tree_node) != nullptr;
+FrameNavigationEntry* NavigationEntryImpl::GetFrameEntry(
+    FrameTreeNode* frame_tree_node) const {
+  NavigationEntryImpl::TreeNode* tree_node = FindFrameEntry(frame_tree_node);
+  return tree_node ? tree_node->frame_entry.get() : nullptr;
 }
 
 void NavigationEntryImpl::SetScreenshotPNGData(
     scoped_refptr<base::RefCountedBytes> png_data) {
   screenshot_ = png_data;
   if (screenshot_.get())
     UMA_HISTOGRAM_MEMORY_KB("Overscroll.ScreenshotSize", screenshot_->size());
 }
 
 GURL NavigationEntryImpl::GetHistoryURLForDataURL() const {
@@ skipping 15 matching lines @@
       return node;
     }
     // Enqueue any children and keep looking.
     for (auto& child : node->children)
       work_queue.push(child);
   }
   return nullptr;
 }
 
 }  // namespace content