Do not submit: high level overview patch.

chrome/browser/ui/sync/tab_contents_synced_tab_delegate.cc

Index: chrome/browser/ui/sync/tab_contents_synced_tab_delegate.cc
diff --git a/chrome/browser/ui/sync/tab_contents_synced_tab_delegate.cc b/chrome/browser/ui/sync/tab_contents_synced_tab_delegate.cc
index 4115f187f6d9f2b8dbf94da6334f34694dbf7b89..2851634e2eed5b59dff07a0d20a8565d3f3fd84d 100644
--- a/chrome/browser/ui/sync/tab_contents_synced_tab_delegate.cc
+++ b/chrome/browser/ui/sync/tab_contents_synced_tab_delegate.cc
@@ -24,12 +24,20 @@ TabContentsSyncedTabDelegate::TabContentsSyncedTabDelegate(
 
 TabContentsSyncedTabDelegate::~TabContentsSyncedTabDelegate() {}
 
-SessionID::id_type TabContentsSyncedTabDelegate::GetWindowId() const {
-  return SessionTabHelper::FromWebContents(web_contents_)->window_id().id();
+const SessionID& TabContentsSyncedTabDelegate::GetWindowId() const {
+  return SessionTabHelper::FromWebContents(web_contents_)->window_id();
 }
 
-SessionID::id_type TabContentsSyncedTabDelegate::GetSessionId() const {
-  return SessionTabHelper::FromWebContents(web_contents_)->session_id().id();
+const SessionID& TabContentsSyncedTabDelegate::GetSessionId() const {
+  return SessionTabHelper::FromWebContents(web_contents_)->session_id();
+}
+
+int64 TabContentsSyncedTabDelegate::GetSyncSessionId() const {
+  return SessionTabHelper::FromWebContents(web_contents_)->GetSessionSyncId();
+}
+
+void TabContentsSyncedTabDelegate::SetSyncSessionId(const int64 sync_id) {
+  SessionTabHelper::FromWebContents(web_contents_)->SetSessionSyncId(sync_id);
 }
 
 bool TabContentsSyncedTabDelegate::IsBeingDestroyed() const {
@@ -73,7 +81,9 @@ NavigationEntry* TabContentsSyncedTabDelegate::GetActiveEntry() const {
 bool TabContentsSyncedTabDelegate::IsPinned() const {
   const browser_sync::SyncedWindowDelegate* window =
       browser_sync::SyncedWindowDelegate::FindSyncedWindowDelegateWithId(
-          GetWindowId());
+          GetWindowId().id());
   // We might not have a parent window, e.g. Developer Tools.
   return window ? window->IsTabPinned(this) : false;
 }
+
+bool TabContentsSyncedTabDelegate::IsTabInMemory() const { return true; }