[Sync] Add support for identifying tabbed activites

chrome/browser/sync/glue/synced_window_delegate_android.cc

Index: chrome/browser/sync/glue/synced_window_delegate_android.cc
diff --git a/chrome/browser/sync/glue/synced_window_delegate_android.cc b/chrome/browser/sync/glue/synced_window_delegate_android.cc
index be9d5d6bbb93dcabeddde4003052318294d52ed6..57183ba3db3381385a1212052a0ba6017b59478a 100644
--- a/chrome/browser/sync/glue/synced_window_delegate_android.cc
+++ b/chrome/browser/sync/glue/synced_window_delegate_android.cc
@@ -18,8 +18,9 @@ namespace browser_sync {
 // SyncedWindowDelegateAndroid implementations
 
 SyncedWindowDelegateAndroid::SyncedWindowDelegateAndroid(
-    TabModel* tab_model)
-    : tab_model_(tab_model) {}
+    TabModel* tab_model,
+    bool is_tabbed_activity)
+    : tab_model_(tab_model), is_tabbed_activity_(is_tabbed_activity) {}
 
 SyncedWindowDelegateAndroid::~SyncedWindowDelegateAndroid() {}
 
@@ -44,7 +45,7 @@ bool SyncedWindowDelegateAndroid::IsApp() const {
 }
 
 bool SyncedWindowDelegateAndroid::IsTypeTabbed() const {
-  return true;
+  return is_tabbed_activity_;
 }
 
 bool SyncedWindowDelegateAndroid::IsTypePopup() const {