SVG object with same idrefs get conflicted even they are under different shadow root

third_party/WebKit/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 3693 matching lines @@
             'svg/graphics/SVGImageChromeClient.cpp',
             'svg/graphics/SVGImageChromeClient.h',
             'svg/graphics/SVGImageForContainer.cpp',
             'svg/graphics/SVGImageForContainer.h',
             'svg/graphics/filters/SVGFEImage.cpp',
             'svg/graphics/filters/SVGFEImage.h',
             'svg/graphics/filters/SVGFilterBuilder.cpp',
             'svg/graphics/filters/SVGFilterBuilder.h',
             'svg/properties/SVGAnimatedProperty.cpp',
             'svg/properties/SVGPropertyTearOff.cpp',
+            'svg/SVGTreeScopeResources.cpp',
+            'svg/SVGTreeScopeResources.h',
         ],
         'core_dictionary_idl_files': [
             'animation/AnimationEffectTimingProperties.idl',
             'animation/ComputedTimingProperties.idl',
             'animation/KeyframeEffectOptions.idl',
             'css/FontFaceDescriptors.idl',
             'css/FontFaceSetLoadEventInit.idl',
             'css/MediaQueryListEventInit.idl',
             'css/cssom/CalcDictionary.idl',
             'dom/DOMPointInit.idl',
@@ skipping 467 matching lines @@
             'testing/PrivateScriptTestTest.cpp',
             'timing/MemoryInfoTest.cpp',
             'timing/PerformanceBaseTest.cpp',
             'timing/PerformanceObserverTest.cpp',
             'workers/WorkerThreadTest.cpp',
             'workers/WorkerThreadTestHelper.h',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }