Split custom element script use and move it into bindings

third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinitionBuilder.h

Index: third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinitionBuilder.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinitionBuilder.h b/third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinitionBuilder.h
new file mode 100644
index 0000000000000000000000000000000000000000..b6d98ab1cee403410831c3e29a54a7eb8af56ff2
--- /dev/null
+++ b/third_party/WebKit/Source/bindings/core/v8/ScriptCustomElementDefinitionBuilder.h
@@ -0,0 +1,50 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ScriptCustomElementDefinitionBuilder_h
+#define ScriptCustomElementDefinitionBuilder_h
+
+#include "core/CoreExport.h"
+#include "core/dom/custom/CustomElementDefinitionBuilder.h"
+#include "platform/heap/Handle.h"
+#include "v8.h"
+#include "wtf/Allocator.h"
+#include "wtf/Noncopyable.h"
+#include "wtf/RefPtr.h"
+
+namespace blink {
+
+class CustomElementsRegistry;
+class ExceptionState;
+class ScriptState;
+class ScriptValue;
+
+class CORE_EXPORT ScriptCustomElementDefinitionBuilder
+    : public CustomElementDefinitionBuilder {
+    STACK_ALLOCATED();
+    WTF_MAKE_NONCOPYABLE(ScriptCustomElementDefinitionBuilder);
+public:
+    ScriptCustomElementDefinitionBuilder(
+        ScriptState*,
+        CustomElementsRegistry*,
+        const ScriptValue& constructorScriptValue,
+        ExceptionState&);
+
+    bool checkConstructorIntrinsics() override;
+    bool checkConstructorNotRegistered() override;
+    bool checkPrototype() override;
+    CustomElementDefinition* build(const CustomElementDescriptor&) override;
+
+private:
+    RefPtr<ScriptState> m_scriptState;
+    Member<CustomElementsRegistry> m_registry;
+    v8::Local<v8::Value> m_constructorValue;
+    v8::Local<v8::Object> m_constructor;
+    v8::Local<v8::Object> m_prototype;
+    ExceptionState& m_exceptionState;
+};
+
+} // namespace blink
+
+#endif // ScriptCustomElementDefinitionBuilder_h