Add Browser Actions tab model selector and open a tab through it if ChromeTabbedActivity is not ava…

chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorBase.java

Index: chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorBase.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorBase.java b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorBase.java
index 52212441a57f874409c60f01c1c7e02a0a2193b1..18a1b276725dde4e9e70052fdeda7c6cd766e9ab 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorBase.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModelSelectorBase.java
@@ -5,6 +5,7 @@
 package org.chromium.chrome.browser.tabmodel;
 
 import org.chromium.base.ObserverList;
+import org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabSelectionType;
@@ -242,4 +243,11 @@ public abstract class TabModelSelectorBase implements TabModelSelector {
             listener.onNewTabCreated(tab);
         }
     }
+
+    @VisibleForTesting
+    protected void clearData() {
+        mTabModels = Collections.emptyList();
+        mActiveModelIndex = NORMAL_TAB_MODEL_INDEX;
+        mTabStateInitialized = false;
+    }
 }