✈ Remove unnecessary flag and DocumentModeManager.

chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabActivityTest.java

 // Copyright 2015 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.customtabs;
 
 import static org.chromium.base.test.util.Restriction.RESTRICTION_TYPE_NON_LOW_END_DEVICE;
 
 import android.app.Activity;
 import android.app.Application;
@@ skipping 837 matching lines @@
     /**
      * Tests that launching a regular Chrome tab after warmup() gives the right layout.
      *
      * About the restrictions and switches: No FRE and no document mode to get a
      * ChromeTabbedActivity, and no tablets to have the tab switcher button.
      *
      * Non-regression test for crbug.com/547121.
      */
     @SmallTest
     @Restriction(ChromeRestriction.RESTRICTION_TYPE_PHONE)
-    @CommandLineFlags.Add({
-            ChromeSwitches.DISABLE_FIRST_RUN_EXPERIENCE, ChromeSwitches.DISABLE_DOCUMENT_MODE})
+    @CommandLineFlags.Add(ChromeSwitches.DISABLE_FIRST_RUN_EXPERIENCE)
     public void testWarmupAndLaunchRegularChrome() {
         warmUpAndWait();
         Intent intent =
                 new Intent(getInstrumentation().getTargetContext(), ChromeLauncherActivity.class);
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
 
         Instrumentation.ActivityMonitor monitor =
                 getInstrumentation().addMonitor(ChromeTabbedActivity.class.getName(), null, false);
         Activity activity = getInstrumentation().startActivitySync(intent);
         assertNotNull("Main activity did not start", activity);
         ChromeTabbedActivity tabbedActivity =
                 (ChromeTabbedActivity) monitor.waitForActivityWithTimeout(
                         ACTIVITY_START_TIMEOUT_MS);
         assertNotNull("ChromeTabbedActivity did not start", tabbedActivity);
         assertNotNull("Should have a tab switcher button.",
                 tabbedActivity.findViewById(R.id.tab_switcher_button));
     }
 
     /**
      * Tests that launching a Custom Tab after warmup() gives the right layout.
      *
      * Non-regression test for crbug.com/547121.
      */
     @SmallTest
     @Restriction(ChromeRestriction.RESTRICTION_TYPE_PHONE)
-    @CommandLineFlags.Add({
-            ChromeSwitches.DISABLE_FIRST_RUN_EXPERIENCE, ChromeSwitches.DISABLE_DOCUMENT_MODE})
+    @CommandLineFlags.Add(ChromeSwitches.DISABLE_FIRST_RUN_EXPERIENCE)
     public void testWarmupAndLaunchRightToolbarLayout() {
         warmUpAndWait();
         startActivityCompletely(createMinimalCustomTabIntent());
         assertNull("Should not have a tab switcher button.",
                 mActivity.findViewById(R.id.tab_switcher_button));
     }
 
     /**
      * Tests the following scenario:
      * - warmup() + mayLaunchUrl("http://example.com/page.html#first-fragment")
@@ skipping 476 matching lines @@
                 if (jsonText.equalsIgnoreCase("null")) jsonText = "";
                 value = jsonText;
             } catch (InterruptedException | TimeoutException e) {
                 e.printStackTrace();
                 return false;
             }
             return TextUtils.equals(mExpected, value);
         }
     }
 }