[sync] WebContentsObserver based sessions notifications

chrome/browser/sync/glue/synced_tab_delegate_android.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 "chrome/browser/sync/glue/synced_tab_delegate_android.h"
 
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/android/tab_android.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sync/glue/synced_window_delegates_getter_android.h"
@@ skipping 18 matching lines @@
 }
 
 SessionID::id_type SyncedTabDelegateAndroid::GetSessionId() const {
   return tab_android_->session_id().id();
 }
 
 bool SyncedTabDelegateAndroid::IsBeingDestroyed() const {
   return tab_contents_delegate_->IsBeingDestroyed();
 }
 
+SessionID::id_type SyncedTabDelegateAndroid::GetSourceTabID() const {
+  return tab_contents_delegate_->GetSourceTabID();
+}
+
 std::string SyncedTabDelegateAndroid::GetExtensionAppId() const {
   return tab_contents_delegate_->GetExtensionAppId();
 }
 
 bool SyncedTabDelegateAndroid::IsInitialBlankNavigation() const {
   return tab_contents_delegate_->IsInitialBlankNavigation();
 }
 
 int SyncedTabDelegateAndroid::GetCurrentEntryIndex() const {
   return tab_contents_delegate_->GetCurrentEntryIndex();
@@ skipping 54 matching lines @@
 void SyncedTabDelegateAndroid::SetSyncId(int sync_id) {
   tab_android_->SetSyncId(sync_id);
 }
 
 bool SyncedTabDelegateAndroid::ShouldSync(
     sync_sessions::SyncSessionsClient* sessions_client) {
   return tab_contents_delegate_->ShouldSync(sessions_client);
 }
 
 }  // namespace browser_sync