Move DocumentMarker related files to editing/markers/ from dom/

Source/core/core.gypi

 {
     'includes': [
         'core_generated.gypi',
     ],
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/KeyframeEffect.idl',
             'animation/EffectModel.idl',
             'animation/AnimationEffectReadOnly.idl',
@@ skipping 1270 matching lines @@
             'editing/CompositionUnderline.h',
             'editing/CompositionUnderlineRangeFilter.cpp',
             'editing/CompositionUnderlineRangeFilter.h',
             'editing/CreateLinkCommand.cpp',
             'editing/CreateLinkCommand.h',
             'editing/DOMSelection.cpp',
             'editing/DOMSelection.h',
             'editing/DeleteFromTextNodeCommand.cpp',
             'editing/DeleteFromTextNodeCommand.h',
             'editing/DeleteSelectionCommand.cpp',
+            'editing/DocumentMarker.cpp',
+            'editing/DocumentMarker.h',
+            'editing/DocumentMarkerController.cpp',
+            'editing/DocumentMarkerController.h',
             'editing/DragCaretController.cpp',
             'editing/DragCaretController.h',
             'editing/EditCommand.cpp',
             'editing/EditingBehavior.cpp',
             'editing/EditingBehavior.h',
             'editing/EditingStrategy.cpp',
             'editing/EditingStrategy.h',
             'editing/EditingStyle.cpp',
             'editing/EditingUtilities.cpp',
             'editing/EditingUtilities.h',
@@ skipping 937 matching lines @@
             'dom/DocumentFragment.cpp',
             'dom/DocumentFullscreen.cpp',
             'dom/DocumentFullscreen.h',
             'dom/DocumentInit.cpp',
             'dom/DocumentInit.h',
             'dom/DocumentLifecycle.cpp',
             'dom/DocumentLifecycle.h',
             'dom/DocumentLifecycleNotifier.cpp',
             'dom/DocumentLifecycleNotifier.h',
             'dom/DocumentLifecycleObserver.h',
-            'dom/DocumentMarker.cpp',
-            'dom/DocumentMarkerController.cpp',
             'dom/DocumentOrderedList.cpp',
             'dom/DocumentOrderedList.h',
             'dom/DocumentOrderedMap.cpp',
             'dom/DocumentParser.cpp',
             'dom/DocumentStyleSheetCollection.cpp',
             'dom/DocumentStyleSheetCollection.h',
             'dom/DocumentStyleSheetCollector.cpp',
             'dom/DocumentStyleSheetCollector.h',
             'dom/DocumentTiming.cpp',
             'dom/DocumentTiming.h',
@@ skipping 1457 matching lines @@
             'css/parser/CSSSelectorParserTest.cpp',
             'css/parser/CSSTokenizerTest.cpp',
             'css/parser/MediaConditionTest.cpp',
             'css/parser/SizesAttributeParserTest.cpp',
             'css/parser/SizesCalcParserTest.cpp',
             'css/resolver/FontBuilderTest.cpp',
             'dom/ActiveDOMObjectTest.cpp',
             'dom/AttrTest.cpp',
             'dom/CrossThreadTaskTest.cpp',
             'dom/DOMImplementationTest.cpp',
-            'dom/DocumentMarkerControllerTest.cpp',
             'dom/DocumentTest.cpp',
             'dom/MainThreadTaskRunnerTest.cpp',
             'dom/NthIndexCacheTest.cpp',
             'dom/PositionTest.cpp',
             'dom/RangeTest.cpp',
             'dom/ScriptRunnerTest.cpp',
             'dom/StyleElementTest.cpp',
             'dom/TreeScopeStyleSheetCollectionTest.cpp',
             'dom/TreeScopeTest.cpp',
             'dom/shadow/ComposedTreeTraversalTest.cpp',
             'editing/CompositionUnderlineRangeFilterTest.cpp',
+            'editing/DocumentMarkerControllerTest.cpp',
             'editing/EditingStrategyTest.cpp',
             'editing/EditingTestBase.cpp',
             'editing/EditingTestBase.h',
             'editing/FrameSelectionTest.cpp',
             'editing/GranularityStrategyTest.cpp',
             'editing/InputMethodControllerTest.cpp',
             'editing/iterators/CharacterIteratorTest.cpp',
             'editing/iterators/SearchBufferTest.cpp',
             'editing/iterators/TextIteratorTest.cpp',
             'editing/StyledMarkupSerializerTest.cpp',
@@ skipping 73 matching lines @@
             'style/OutlineValueTest.cpp',
             'style/SVGComputedStyleTest.cpp',
             'svg/UnsafeSVGAttributeSanitizationTest.cpp',
             'testing/PrivateScriptTestTest.cpp',
             'timing/MemoryInfoTest.cpp',
             'workers/WorkerThreadTest.cpp',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }