[Sync] Add per-navigation timestamps/unique ids to tab sync.

chrome/browser/sync/glue/synced_session.cc

 // Copyright (c) 2012 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 "chrome/browser/sync/glue/synced_session.h"
 
 #include "base/stl_util.h"
-#include "chrome/browser/sessions/session_types.h"
 #include "chrome/common/url_constants.h"
+#include "content/public/browser/navigation_entry.h"
 
 namespace browser_sync {
 
+SyncedTabNavigation::SyncedTabNavigation() : unique_id_(0) {
+}
+
+SyncedTabNavigation::SyncedTabNavigation(const SyncedTabNavigation& tab)
+    : unique_id_(tab.unique_id_),
+      timestamp_(tab.timestamp_) {
+}
+
+SyncedTabNavigation::SyncedTabNavigation(int index,
+                                         const GURL& virtual_url,
+                                         const content::Referrer& referrer,
+                                         const string16& title,
+                                         const std::string& state,
+                                         content::PageTransition transition,
+                                         int unique_id,
+                                         const base::Time& timestamp)
+    : TabNavigation(index, virtual_url, referrer, title, state, transition),
+      unique_id_(unique_id),
+      timestamp_(timestamp) {
+}
+
+SyncedTabNavigation::~SyncedTabNavigation() {
+}
+
+void SyncedTabNavigation::set_unique_id(int unique_id) {
+  unique_id_ = unique_id;
+}
+
+int SyncedTabNavigation::unique_id() const {
+  return unique_id_;
+}
+
+void SyncedTabNavigation::set_timestamp(const base::Time& timestamp) {
+  timestamp_ = timestamp;
+}
+base::Time SyncedTabNavigation::timestamp() const {
+  return timestamp_;
+}
+
+SyncedSessionTab::SyncedSessionTab() {}
+SyncedSessionTab::~SyncedSessionTab() {}
+
 SyncedSession::SyncedSession() : session_tag("invalid"),
                                  device_type(TYPE_UNSET) {
 }
 
 SyncedSession::~SyncedSession() {
   STLDeleteContainerPairSecondPointers(windows.begin(), windows.end());
 }
 
 // Note: if you modify this, make sure you modify
 // SessionModelAssociator::ShouldSyncTab to ensure the logic matches.
@@ skipping 16 matching lines @@
   for (std::vector<SessionTab*>::const_iterator i = window.tabs.begin();
       i != window.tabs.end(); ++i) {
     const SessionTab* tab = *i;
     if (ShouldSyncSessionTab(*tab))
       num_populated++;
   }
   return (num_populated == 0);
 }
 
 }  // namespace browser_sync