Added code to support launch new tab with context menu

chrome/android/shell/java/src/org/chromium/chrome/shell/TabManager.java

 // Copyright 2014 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.
 
 package org.chromium.chrome.shell;
 
 import android.content.Context;
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.ViewGroup;
@@ skipping 57 matching lines @@
      * @param window The window used to generate all ContentViews.
      * @param videoViewClient The client to handle interactions from ContentVideoViews.
      */
     public void initialize(WindowAndroid window, ContentVideoViewClient videoViewClient) {
         assert window != null;
         assert videoViewClient != null;
 
         mContentViewHolder = (ViewGroup) findViewById(R.id.content_container);
 
         mTabModelSelector = new ChromeShellTabModelSelector(
-                window, videoViewClient, mContentViewHolder);
+                window, videoViewClient, mContentViewHolder, this);
         mTabModelSelector.getModel(false).addObserver(mTabModelObserver);
 
         mToolbar = (ChromeShellToolbar) findViewById(R.id.toolbar);
         mToolbar.setTabManager(this);
         mContentViewRenderView = new ContentViewRenderView(getContext()) {
             @Override
             protected void onReadyToRender() {
                 if (mCurrentTab == null) createTab(mStartupUrl, TabLaunchType.FROM_RESTORE);
             }
         };
@@ skipping 110 matching lines @@
         LoadUrlParams loadUrlParams = new LoadUrlParams(url);
         loadUrlParams.setTransitionType(PageTransition.TYPED | PageTransition.FROM_ADDRESS_BAR);
         Tab tab = mTabModelSelector.getCurrentTab();
         if (tab != null) {
             tab.loadUrl(loadUrlParams);
             return tab;
         }
         return createTab(url, TabLaunchType.FROM_KEYBOARD);
     }
 }