Migrate TabPersistentStore to one shared directory for multi-instance

chrome/android/javatests/src/org/chromium/chrome/browser/incognito/IncognitoNotificationServiceTest.java

 // Copyright 2016 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.browser.incognito;
 
 import android.app.PendingIntent;
 import android.app.PendingIntent.CanceledException;
 import android.content.Context;
 import android.test.suitebuilder.annotation.MediumTest;
@@ skipping 89 matching lines @@
                 return !incognitoProfile.isNativeInitialized();
             }
         });
     }
 
     @Feature("Incognito")
     @MediumTest
     public void testNoAliveProcess() throws Exception {
         Context context = getInstrumentation().getTargetContext();
         final TestTabModelDirectory tabbedModeDirectory = new TestTabModelDirectory(
-                context, "tabs", String.valueOf(1));
+                context, "tabs", String.valueOf(0));
 
         // Add a couple non-incognito tabs (their filenames use a different prefix, so we do not
         // need to worry about ID space collisions with the generated incognito tabs).
         tabbedModeDirectory.writeTabStateFile(TestTabModelDirectory.V2_DUCK_DUCK_GO);
         tabbedModeDirectory.writeTabStateFile(TestTabModelDirectory.V2_BAIDU);
 
         // Generate a few incognito tabs (using arbitrary data from an existing TabState
         // definition).
         for (int i = 0; i < 3; i++) {
             TabStateInfo incognitoInfo = new TabStateInfo(
@@ skipping 57 matching lines @@
 
         ThreadUtils.runOnUiThreadBlocking(new Runnable() {
             @Override
             public void run() {
                 assertFalse(LibraryLoader.isInitialized());
             }
         });
     }
 
 }