Pass through the parent_tab_id when creating a new tab.

chrome/browser/ui/android/tab_model/tab_model_unittest.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/android/tab_android.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/ui/android/tab_model/tab_model.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
@@ skipping 16 matching lines @@
 class TestTabModel : public TabModel {
  public:
   explicit TestTabModel(Profile* profile)
     : TabModel(profile) {}
 
   virtual int GetTabCount() const OVERRIDE { return 0; }
   virtual int GetActiveIndex() const OVERRIDE { return 0; }
   virtual content::WebContents* GetWebContentsAt(int index) const OVERRIDE {
     return NULL;
   }
-  virtual void CreateTab(content::WebContents* web_contents) OVERRIDE {}
+  virtual void CreateTab(content::WebContents* web_contents,
+                         int parent_tab_id) OVERRIDE {}
   virtual content::WebContents* CreateNewTabForDevTools(
       const GURL& url) OVERRIDE {
     return NULL;
   }
   virtual bool IsSessionRestoreInProgress() const OVERRIDE { return false; }
   virtual void OpenClearBrowsingData() const OVERRIDE {}
   virtual TabAndroid* GetTabAt(int index) const OVERRIDE {
     return NULL;
   }
   virtual void SetActiveIndex(int index) OVERRIDE {}
@@ skipping 30 matching lines @@
   EXPECT_EQ(&testing_profile, tab_model.GetProfile());
   EXPECT_TRUE(tab_model.IsOffTheRecord());
 
   // Notify profile is being destroyed and verify pointer is cleared.
   content::NotificationService::current()->Notify(
     chrome::NOTIFICATION_PROFILE_DESTROYED,
     content::Source<Profile>(&testing_profile),
     content::NotificationService::NoDetails());
   EXPECT_EQ(NULL, tab_model.GetProfile());
 }