Move Clipboard-related code from core/dom to core/clipboard

Source/core/core.gypi

 {
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/Animation.idl',
             'animation/Player.idl',
             'animation/TimedItem.idl',
+            'clipboard/Clipboard.idl',
+            'clipboard/DataTransferItem.idl',
+            'clipboard/DataTransferItemList.idl',
             'css/CSS.idl',
             'css/CSSCharsetRule.idl',
             'css/CSSFontFaceLoadEvent.idl',
             'css/CSSFontFaceRule.idl',
             'css/CSSImportRule.idl',
             'css/CSSKeyframeRule.idl',
             'css/CSSKeyframesRule.idl',
             'css/CSSMediaRule.idl',
             'css/CSSPageRule.idl',
             'css/CSSPrimitiveValue.idl',
@@ skipping 25 matching lines @@
             'css/WebKitCSSFilterRule.idl',
             'css/WebKitCSSFilterValue.idl',
             'css/WebKitCSSMatrix.idl',
             'css/WebKitCSSRegionRule.idl',
             'css/WebKitCSSTransformValue.idl',
             'dom/Attr.idl',
             'dom/CDATASection.idl',
             'dom/CharacterData.idl',
             'dom/ClientRect.idl',
             'dom/ClientRectList.idl',
-            'dom/Clipboard.idl',
             'dom/Comment.idl',
             'dom/DOMError.idl',
             'dom/DOMException.idl',
             'dom/DOMImplementation.idl',
             'dom/DOMSettableTokenList.idl',
             'dom/DOMStringList.idl',
             'dom/DOMStringMap.idl',
             'dom/DOMTokenList.idl',
-            'dom/DataTransferItem.idl',
-            'dom/DataTransferItemList.idl',
             'dom/Document.idl',
             'dom/DocumentFragment.idl',
             'dom/DocumentType.idl',
             'dom/Element.idl',
             'dom/MessageChannel.idl',
             'dom/MessagePort.idl',
             'dom/MutationObserver.idl',
             'dom/MutationRecord.idl',
             'dom/NamedNodeMap.idl',
             'dom/Node.idl',
@@ skipping 533 matching lines @@
             'animation/css/CSSAnimations.cpp',
             'animation/css/CSSAnimations.h',
             'animation/css/CSSAnimationData.cpp',
             'animation/css/CSSAnimationData.h',
             'animation/css/CSSAnimationDataList.cpp',
             'animation/css/CSSAnimationDataList.h',
             'animation/css/CSSPendingAnimations.cpp',
             'animation/css/CSSPendingAnimations.h',
             'animation/css/TransitionTimeline.cpp',
             'animation/css/TransitionTimeline.h',
+            'clipboard/Clipboard.cpp',
+            'clipboard/Clipboard.h',
+            'clipboard/DataObject.cpp',
+            'clipboard/DataObject.h',
+            'clipboard/DataObjectItem.cpp',
+            'clipboard/DataObjectItem.h',
+            'clipboard/DataTransferItem.cpp',
+            'clipboard/DataTransferItem.h',
+            'clipboard/DataTransferItemList.cpp',
+            'clipboard/DataTransferItemList.h',
+            'clipboard/Pasteboard.cpp',
+            'clipboard/Pasteboard.h',
             'css/BasicShapeFunctions.cpp',
             'css/CSSArrayFunctionValue.cpp',
             'css/CSSArrayFunctionValue.h',
             'css/CSSAspectRatioValue.cpp',
             'css/CSSAspectRatioValue.h',
             'css/CSSBasicShapes.cpp',
             'css/CSSBorderImage.cpp',
             'css/CSSBorderImage.h',
             'css/CSSBorderImageSliceValue.cpp',
             'css/CSSBorderImageSliceValue.h',
@@ skipping 1213 matching lines @@
             'dom/ChildListMutationScope.cpp',
             'dom/ChildListMutationScope.h',
             'dom/ChildNodeList.cpp',
             'dom/ChildNodeList.h',
             'dom/ClassCollection.cpp',
             'dom/ClassCollection.h',
             'dom/ClientRect.cpp',
             'dom/ClientRect.h',
             'dom/ClientRectList.cpp',
             'dom/ClientRectList.h',
-            'dom/Clipboard.cpp',
             'dom/Comment.cpp',
             'dom/Comment.h',
             'dom/ContainerNode.cpp',
             'dom/ContainerNodeAlgorithms.cpp',
             'dom/ContainerNodeAlgorithms.h',
             'dom/ContextFeatures.cpp',
             'dom/ContextFeatures.h',
             'dom/ContextLifecycleNotifier.cpp',
             'dom/ContextLifecycleNotifier.h',
             'dom/ContextLifecycleObserver.cpp',
             'dom/ContextLifecycleObserver.h',
             'dom/CrossThreadTask.h',
             'dom/DatasetDOMStringMap.cpp',
             'dom/DatasetDOMStringMap.h',
-            'dom/DataObject.cpp',
-            'dom/DataObject.h',
-            'dom/DataObjectItem.cpp',
-            'dom/DataObjectItem.h',
-            'dom/DataTransferItem.cpp',
-            'dom/DataTransferItem.h',
-            'dom/DataTransferItemList.cpp',
-            'dom/DataTransferItemList.h',
             'dom/DecodedDataDocumentParser.cpp',
             'dom/DecodedDataDocumentParser.h',
             'dom/Document.cpp',
             'dom/DocumentEncodingData.cpp',
             'dom/DocumentEncodingData.h',
             'dom/DocumentFragment.cpp',
             'dom/DocumentFullscreen.cpp',
             'dom/DocumentFullscreen.h',
             'dom/DocumentInit.cpp',
             'dom/DocumentInit.h',
@@ skipping 90 matching lines @@
             'dom/NodeChildRemovalTracker.cpp',
             'dom/NodeFilter.cpp',
             'dom/NodeFilter.h',
             'dom/NodeFilterCondition.cpp',
             'dom/NodeFilterCondition.h',
             'dom/NodeIterator.cpp',
             'dom/NodeIterator.h',
             'dom/NodeList.cpp',
             'dom/NodeRareData.cpp',
             'dom/NodeRareData.h',
-            'dom/Pasteboard.cpp',
-            'dom/Pasteboard.h',
             'dom/RenderTreeBuilder.cpp',
             'dom/RenderTreeBuilder.h',
             'dom/NodeRenderingTraversal.cpp',
             'dom/NodeRenderingTraversal.h',
             'dom/NodeRenderStyle.h',
             'dom/NodeTraversal.cpp',
             'dom/NodeTraversal.h',
             'dom/NodeWithIndex.h',
             'dom/Notation.h',
             'dom/ParentNode.h',
@@ skipping 1282 matching lines @@
             'html/parser/HTMLParserThreadTest.cpp',
             'html/track/vtt/BufferedLineReaderTest.cpp',
             'html/track/vtt/VTTScannerTest.cpp',
             'rendering/RenderOverflowTest.cpp',
             'rendering/shapes/BoxShapeTest.cpp',
             'testing/UnitTestHelpers.cpp',
             'testing/UnitTestHelpers.h',
         ],
     }
 }