Add tests for DocumentMarkerListEditor::ShiftMarkersContent{D,Ind}ependent

third_party/WebKit/Source/core/editing/BUILD.gn

 # 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.
 
 import("//third_party/WebKit/Source/core/core.gni")
 
 blink_core_sources("editing") {
   split_count = 5
   sources = [
     "CaretDisplayItemClient.cpp",
@@ skipping 289 matching lines @@
     "commands/TypingCommandTest.cpp",
     "iterators/BackwardsTextBufferTest.cpp",
     "iterators/CharacterIteratorTest.cpp",
     "iterators/ForwardsTextBufferTest.cpp",
     "iterators/SearchBufferTest.cpp",
     "iterators/SimplifiedBackwardsTextIteratorTest.cpp",
     "iterators/TextIteratorTest.cpp",
     "iterators/TextSearcherICUTest.cpp",
     "markers/CompositionMarkerListImplTest.cpp",
     "markers/DocumentMarkerControllerTest.cpp",
+    "markers/DocumentMarkerListEditorTest.cpp",
     "markers/DocumentMarkerTest.cpp",
     "markers/GrammarMarkerListImplTest.cpp",
     "markers/SpellingMarkerListImplTest.cpp",
     "markers/TextMatchMarkerListImplTest.cpp",
     "serializers/StyledMarkupSerializerTest.cpp",
     "spellcheck/IdleSpellCheckCallbackTest.cpp",
     "spellcheck/SpellCheckTestBase.cpp",
     "spellcheck/SpellCheckTestBase.h",
     "spellcheck/SpellCheckerTest.cpp",
     "state_machines/BackspaceStateMachineTest.cpp",
@@ skipping 11 matching lines @@
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/WebKit/Source/core:core",
   ]
 }