[Bindings] Update runtime enabled features from partial interfaces

third_party/WebKit/Source/bindings/core/v8/V8Binding.h

 /*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 * Copyright (C) 2012 Ericsson AB. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
@@ skipping 1060 matching lines @@
 
   void requestInterrupt() override {
     m_isolate->RequestInterrupt(&onInterruptCallback, this);
   }
 
  private:
   v8::Isolate* m_isolate;
 };
 
 typedef void (*InstallTemplateFunction)(
-    v8::Isolate*,
-    const DOMWrapperWorld&,
+    v8::Isolate* isolate,
+    const DOMWrapperWorld& world,
     v8::Local<v8::FunctionTemplate> interfaceTemplate);
+typedef void (*InstallRuntimeEnabledFunction)(

[Yuki, 2017/02/13 12:15:03]

nit: We don't need to expose this type to anything except for the code
generator.  GeneratedCodeHelper.h is the best place, I think.

+    v8::Isolate* isolate,
+    const DOMWrapperWorld& world,
+    v8::Local<v8::Object> instance,
+    v8::Local<v8::Object> prototype,
+    v8::Local<v8::Function> interface);
 
 // Freeze a V8 object. The type of the first parameter and the return value is
 // intentionally v8::Value so that this function can wrap ToV8().
 // If the argument isn't an object, this will crash.
 CORE_EXPORT v8::Local<v8::Value> freezeV8Object(v8::Local<v8::Value>,
                                                 v8::Isolate*);
 
 CORE_EXPORT v8::Local<v8::Value> fromJSONString(v8::Isolate*,
                                                 const String& stringifiedJSON,
                                                 ExceptionState&);
 }  // namespace blink
 
 #endif  // V8Binding_h