Bring back ScriptDebugServer and associated machinery

sky/engine/bindings/core/v8/custom/custom.gypi

Index: sky/engine/bindings/core/v8/custom/custom.gypi
diff --git a/sky/engine/bindings/core/v8/custom/custom.gypi b/sky/engine/bindings/core/v8/custom/custom.gypi
index e91796fe4ac432c5aba2eee74e0f0d952d6068da..b50daea5703a59041bd42fa4000619f64b4efb0b 100644
--- a/sky/engine/bindings/core/v8/custom/custom.gypi
+++ b/sky/engine/bindings/core/v8/custom/custom.gypi
@@ -9,10 +9,10 @@
             'V8ArrayBufferCustom.h',
             'V8ArrayBufferViewCustom.cpp',
             'V8ArrayBufferViewCustom.h',
+            'V8CanvasRenderingContext2DCustom.cpp',
             'V8CSSRuleCustom.cpp',
             'V8CSSStyleDeclarationCustom.cpp',
             'V8CSSValueCustom.cpp',
-            'V8CanvasRenderingContext2DCustom.cpp',
             'V8CustomEventCustom.cpp',
             'V8DataViewCustom.cpp',
             'V8DataViewCustom.h',
@@ -22,13 +22,14 @@
             'V8EventTargetCustom.cpp',
             'V8Float32ArrayCustom.h',
             'V8Float64ArrayCustom.h',
+            'V8HistoryCustom.cpp',
             'V8HTMLCanvasElementCustom.cpp',
             'V8HTMLElementCustom.cpp',
-            'V8HistoryCustom.cpp',
             'V8ImageDataCustom.cpp',
             'V8Int16ArrayCustom.h',
             'V8Int32ArrayCustom.h',
             'V8Int8ArrayCustom.h',
+            'V8JavaScriptCallFrameCustom.cpp',
             'V8LocationCustom.cpp',
             'V8MutationObserverCustom.cpp',
             'V8NodeCustom.cpp',