Delete some unused document mode code

Change-Id: I5451d561fb455956bb876683e5784a296419c199
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2637085
Commit-Queue: Michael Thiessen <mthiesse@chromium.org>
Commit-Queue: Yaron Friedman <yfriedman@chromium.org>
Auto-Submit: Michael Thiessen <mthiesse@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844985}

chrome/android/java/src/org/chromium/chrome/browser/IntentHandler.java

@@ -77,29 +77,6 @@ import java.util.Map;
 public class IntentHandler {
     private static final String TAG = "IntentHandler";
 
-    /**
-     * Document mode: If true, Chrome is launched into the same Task.
-     * Note: used by first-party applications, do not rename.
-     */
-    public static final String EXTRA_APPEND_TASK = "com.android.chrome.append_task";
-
-    /**
-     * Document mode: If true, keep tasks in Recents when a user hits back at the root URL.
-     * Note: used by first-party applications, do not rename.
-     */
-    public static final String EXTRA_PRESERVE_TASK = "com.android.chrome.preserve_task";
-
-    /**
-     * Document mode: If true, opens the document in background.
-     * Note: used by first-party applications, do not rename.
-     */
-    public static final String EXTRA_OPEN_IN_BG = "com.android.chrome.open_with_affiliation";
-
-    /**
-     * Document mode: Records what caused a document to be created.
-     */
-    public static final String EXTRA_STARTED_BY = "com.android.chrome.started_by";
-
     /**
      * Tab ID to use when creating a new Tab.
      */

chrome/test/android/BUILD.gn

@@ -219,7 +219,6 @@ android_library("chrome_java_test_support") {
     "javatests/src/org/chromium/chrome/test/util/ChromeRenderTestRule.java",
     "javatests/src/org/chromium/chrome/test/util/ChromeRestriction.java",
     "javatests/src/org/chromium/chrome/test/util/ChromeTabUtils.java",
-    "javatests/src/org/chromium/chrome/test/util/DisableInTabbedMode.java",
     "javatests/src/org/chromium/chrome/test/util/FullscreenTestUtils.java",
     "javatests/src/org/chromium/chrome/test/util/InfoBarTestAnimationListener.java",
     "javatests/src/org/chromium/chrome/test/util/InfoBarUtil.java",

chrome/test/android/javatests/src/org/chromium/chrome/test/util/DisableInTabbedMode.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.test.util;
-
-import java.lang.annotation.Inherited;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-
-/**
- * This annotation can be used to mark a test that should be enabled only in Document mode.
- */
-@Inherited
-@Retention(RetentionPolicy.RUNTIME)
-public @interface DisableInTabbedMode {
-}