Adding option for adding new tab in tab manager for chrome shell.

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 15 matching lines @@
 /**
  * The TabManager hooks together all of the related {@link View}s that are used to represent
  * a {@link ChromeShellTab}.  It properly builds a {@link ChromeShellTab} and makes sure that the
  * {@link ChromeShellToolbar} and {@link ContentViewRenderView} show the proper content.
  */
 public class TabManager extends LinearLayout {
     private static final String DEFAULT_URL = "http://www.google.com";
 
     private ViewGroup mContentViewHolder;
     private ContentViewRenderView mContentViewRenderView;
-    private ChromeShellToolbar mToolbar;
+    public ChromeShellToolbar mToolbar;

[Bernhard Bauer, 2014/11/05 10:01:53]

Don't make member variables public, add a getter method instead.

 
     private ChromeShellTab mCurrentTab;
 
     private String mStartupUrl = DEFAULT_URL;
 
     private ChromeShellTabModelSelector mTabModelSelector;
 
     private final EmptyTabModelObserver mTabModelObserver = new EmptyTabModelObserver() {
         @Override
         public void didSelectTab(Tab tab, TabSelectionType type, int lastId) {
@@ skipping 160 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);
     }
 }