Add IDLDictionaryBase

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 3885 matching lines @@
             '<(blink_core_output_dir)/page/EventSourceInit.cpp',
             '<(blink_core_output_dir)/page/EventSourceInit.h',
             '<(blink_core_output_dir)/page/scrolling/ScrollStateInit.cpp',
             '<(blink_core_output_dir)/page/scrolling/ScrollStateInit.h',
             '<(blink_core_output_dir)/timing/PerformanceObserverInit.cpp',
             '<(blink_core_output_dir)/timing/PerformanceObserverInit.h',
         ],
         'core_testing_dictionary_idl_files': [
             'testing/InternalDictionary.idl',
             'testing/InternalDictionaryDerived.idl',
+            'testing/InternalDictionaryDerivedDerived.idl',
         ],
         'webcore_testing_idl_files': [
             'testing/DictionaryTest.idl',
             'testing/GCObservation.idl',
             'testing/GarbageCollectedScriptWrappable.idl',
             'testing/InternalSettings.idl',
             'testing/LayerRect.idl',
             'testing/LayerRectList.idl',
             'testing/PrivateScriptTest.idl',
             'testing/TypeConversions.idl',
@@ skipping 12 matching lines @@
         ],
         'generated_webcore_testing_idl_files': [
             '<(blink_core_output_dir)/testing/InternalRuntimeFlags.idl',
             '<(blink_core_output_dir)/testing/InternalSettingsGenerated.idl',
         ],
         'generated_core_testing_dictionary_files': [
             '<(blink_core_output_dir)/testing/InternalDictionary.cpp',
             '<(blink_core_output_dir)/testing/InternalDictionary.h',
             '<(blink_core_output_dir)/testing/InternalDictionaryDerived.cpp',
             '<(blink_core_output_dir)/testing/InternalDictionaryDerived.h',
+            '<(blink_core_output_dir)/testing/InternalDictionaryDerivedDerived.cpp',
+            '<(blink_core_output_dir)/testing/InternalDictionaryDerivedDerived.h',
         ],
         'webcore_testing_files': [
             '<(blink_core_output_dir)/testing/InternalSettingsGenerated.cpp',
             '<(blink_core_output_dir)/testing/InternalSettingsGenerated.h',
             'origin_trials/testing/InternalsFrobulate.cpp',
             'origin_trials/testing/InternalsFrobulate.h',
             'origin_trials/testing/InternalsFrobulateInterfaceBindings.h',
             'origin_trials/testing/WorkerInternalsFrobulate.h',
             'testing/DictionaryTest.cpp',
             'testing/DictionaryTest.h',
@@ skipping 283 matching lines @@
             'testing/PrivateScriptTestTest.cpp',
             'timing/MemoryInfoTest.cpp',
             'timing/PerformanceBaseTest.cpp',
             'timing/PerformanceObserverTest.cpp',
             'workers/WorkerThreadTest.cpp',
             'workers/WorkerThreadTestHelper.h',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }