Split out tests of private scripts from Internals to PrivateScriptTest

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 3271 matching lines @@
             'svg/properties/SVGPropertyTearOff.cpp',
         ],
         'webcore_testing_idl_files': [
           'testing/GCObservation.idl',
           'testing/InternalProfilers.idl',
           'testing/InternalSettings.idl',
           'testing/Internals.idl',
           'testing/LayerRect.idl',
           'testing/LayerRectList.idl',
           'testing/MallocStatistics.idl',
+          'testing/PrivateScriptTest.idl',
           'testing/TypeConversions.idl',
         ],
         'generated_webcore_testing_idl_files': [
           '<(blink_core_output_dir)/InternalRuntimeFlags.idl',
           '<(blink_core_output_dir)/InternalSettingsGenerated.idl',
         ],
         'webcore_testing_files': [
             '<(blink_core_output_dir)/InternalSettingsGenerated.cpp',
             '<(blink_core_output_dir)/InternalSettingsGenerated.h',
             'testing/DummyPageHolder.cpp',
             'testing/DummyPageHolder.h',
             'testing/GCObservation.cpp',
             'testing/GCObservation.h',
             'testing/InternalProfilers.cpp',
             'testing/InternalProfilers.h',
             'testing/InternalSettings.cpp',
             'testing/InternalSettings.h',
             'testing/Internals.cpp',
             'testing/Internals.h',
             'testing/LayerRect.h',
             'testing/LayerRectList.cpp',
             'testing/LayerRectList.h',
             'testing/MallocStatistics.h',
             'testing/MockPagePopupDriver.cpp',
             'testing/MockPagePopupDriver.h',
             'testing/NullExecutionContext.cpp',
             'testing/NullExecutionContext.h',
+            'testing/PrivateScriptTest.h',
             'testing/TypeConversions.h',
             'testing/v8/WebCoreTestSupport.cpp',
             'testing/v8/WebCoreTestSupport.h',
         ],
         'core_unittest_files': [
             'animation/animatable/AnimatableColorTest.cpp',
             'animation/animatable/AnimatableDoubleTest.cpp',
             'animation/animatable/AnimatableLengthTest.cpp',
             'animation/animatable/AnimatableNeutralTest.cpp',
             'animation/animatable/AnimatableStrokeDasharrayListTest.cpp',
@@ skipping 75 matching lines @@
             'rendering/RenderOverflowTest.cpp',
             'rendering/RenderTableCellTest.cpp',
             'rendering/RenderTableRowTest.cpp',
             'rendering/shapes/BoxShapeTest.cpp',
             'testing/UnitTestHelpers.cpp',
             'testing/UnitTestHelpers.h',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }