[bindings] partial interfaces should not violate componentization

Source/bindings/templates/partial_interface.h

+// Copyright 2014 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.
+
+// This file has been auto-generated by {{code_generator}}. DO NOT MODIFY!
+
+#ifndef {{v8_class_or_partial}}_h
+#define {{v8_class_or_partial}}_h
+
+{% for filename in header_includes %}
+#include "{{filename}}"
+{% endfor %}
+
+namespace blink {
+
+class {{v8_class_or_partial}} {
+public:
+    static void initialize();
+    {% for method in methods if method.is_custom %}
+    {% filter conditional(method.conditional_string) %}
+    static void {{method.name}}MethodCustom(const v8::FunctionCallbackInfo<v8::Value>&);
+    {% endfilter %}
+    {% endfor %}
+    {% for attribute in attributes %}
+    {% if attribute.has_custom_getter %}{# FIXME: and not attribute.implemented_by #}
+    {% filter conditional(attribute.conditional_string) %}
+    static void {{attribute.name}}AttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>&);
+    {% endfilter %}
+    {% endif %}
+    {% if attribute.has_custom_setter %}{# FIXME: and not attribute.implemented_by #}
+    {% filter conditional(attribute.conditional_string) %}
+    static void {{attribute.name}}AttributeSetterCustom(v8::Local<v8::Value>, const v8::PropertyCallbackInfo<void>&);
+    {% endfilter %}
+    {% endif %}
+    {% endfor %}
+    {# Custom internal fields #}
+    static void installConditionallyEnabledMethods(v8::Handle<v8::Object>, v8::Isolate*);
+private:
+    static void install{{v8_class}}Template(v8::Handle<v8::FunctionTemplate>, v8::Isolate*);
+};
+}
+#endif // {{v8_class_or_partial}}_h