[not for review] Add Draw entries to window Performance Timeline

Source/core/core.gypi

 {
     'includes': [
       'core_generated.gypi',
     ],
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/Animation.idl',
             'animation/AnimationEffect.idl',
             'animation/AnimationPlayer.idl',
@@ skipping 420 matching lines @@
             'svg/SVGViewElement.idl',
             'svg/SVGViewSpec.idl',
             'svg/SVGZoomEvent.idl',
             'timing/MemoryInfo.idl',
             'timing/Performance.idl',
             'timing/PerformanceEntry.idl',
             'timing/PerformanceMark.idl',
             'timing/PerformanceMeasure.idl',
             'timing/PerformanceNavigation.idl',
             'timing/PerformanceResourceTiming.idl',
+            'timing/PerformanceSmoothnessTiming.idl',
             'timing/PerformanceTiming.idl',
             'workers/DedicatedWorkerGlobalScope.idl',
             'workers/SharedWorker.idl',
             'workers/SharedWorkerGlobalScope.idl',
             'workers/Worker.idl',
             'workers/WorkerConsole.idl',
             'workers/WorkerGlobalScope.idl',
             'workers/WorkerLocation.idl',
             'workers/WorkerNavigator.idl',
             'xml/DOMParser.idl',
@@ skipping 1355 matching lines @@
             'timing/Performance.cpp',
             'timing/Performance.h',
             'timing/PerformanceEntry.cpp',
             'timing/PerformanceEntry.h',
             'timing/PerformanceMark.h',
             'timing/PerformanceMeasure.h',
             'timing/PerformanceNavigation.cpp',
             'timing/PerformanceNavigation.h',
             'timing/PerformanceResourceTiming.cpp',
             'timing/PerformanceResourceTiming.h',
+            'timing/PerformanceSmoothnessTiming.cpp',
+            'timing/PerformanceSmoothnessTiming.h',
             'timing/PerformanceTiming.cpp',
             'timing/PerformanceTiming.h',
             'timing/PerformanceUserTiming.cpp',
             'timing/PerformanceUserTiming.h',
             'timing/ResourceTimingInfo.h',
             'workers/AbstractWorker.cpp',
             'workers/AbstractWorker.h',
             'workers/DedicatedWorkerGlobalScope.cpp',
             'workers/DedicatedWorkerGlobalScope.h',
             'workers/DedicatedWorkerThread.cpp',
@@ skipping 1675 matching lines @@
             'rendering/shapes/BoxShapeTest.cpp',
             'rendering/style/OutlineValueTest.cpp',
             'testing/PrivateScriptTestTest.cpp',
             'streams/ReadableStreamTest.cpp',
             'testing/UnitTestHelpers.cpp',
             'testing/UnitTestHelpers.h',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }