[Hera] Excise a bunch of document mode code

chrome/test/android/BUILD.gn

 # 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.
 
 import("//build/config/android/rules.gni")
 
 # GYP: //chrome/chrome_tests.gypi:chrome_java_test_support
 android_library("chrome_java_test_support") {
   testonly = true
   java_files = [
@@ skipping 17 matching lines @@
     "javatests/src/org/chromium/chrome/test/util/browser/LocationSettingsTestUtil.java",
     "javatests/src/org/chromium/chrome/test/util/browser/notifications/MockNotificationManagerProxy.java",
     "javatests/src/org/chromium/chrome/test/util/browser/signin/MockChangeEventChecker.java",
     "javatests/src/org/chromium/chrome/test/util/browser/signin/SigninTestUtil.java",
     "javatests/src/org/chromium/chrome/test/util/browser/sync/SyncTestUtil.java",
     "javatests/src/org/chromium/chrome/test/util/browser/TabLoadObserver.java",
     "javatests/src/org/chromium/chrome/test/util/browser/tabmodel/document/MockActivityDelegate.java",
     "javatests/src/org/chromium/chrome/test/util/browser/tabmodel/document/MockDocumentTabCreatorManager.java",
     "javatests/src/org/chromium/chrome/test/util/browser/tabmodel/document/MockStorageDelegate.java",
     "javatests/src/org/chromium/chrome/test/util/browser/tabmodel/document/MockTabDelegate.java",
-    "javatests/src/org/chromium/chrome/test/util/browser/tabmodel/document/TestInitializationObserver.java",
     "javatests/src/org/chromium/chrome/test/util/browser/tabmodel/MockTabModel.java",
     "javatests/src/org/chromium/chrome/test/util/browser/tabmodel/MockTabModelSelector.java",
     "javatests/src/org/chromium/chrome/test/util/browser/TabTitleObserver.java",
     "javatests/src/org/chromium/chrome/test/util/ChromeRestriction.java",
     "javatests/src/org/chromium/chrome/test/util/ChromeSigninUtils.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",
@@ skipping 26 matching lines @@
     "//sync/android:sync_java",
     "//testing/android/reporter:reporter_java",
     "//third_party/android_tools:android_support_v13_java",
     "//third_party/android_tools:android_support_v7_appcompat_java",
     "//third_party/android_tools:legacy_http_javalib",
     "//third_party/jsr-305:jsr_305_javalib",
     "//ui/android:ui_java",
     google_play_services_library,
   ]
 }