[wasm] response-based compile APIs

third_party/WebKit/Source/modules/fetch/Response.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.
 
 #ifndef Response_h
 #define Response_h
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "modules/ModulesExport.h"
 #include "modules/fetch/Body.h"
 #include "modules/fetch/BodyStreamBuffer.h"
 #include "modules/fetch/FetchResponseData.h"
 #include "modules/fetch/Headers.h"
 #include "platform/blob/BlobData.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ExceptionState;
 class ResponseInit;
 class ScriptState;
 class WebServiceWorkerResponse;
 
 class MODULES_EXPORT Response final : public Body {
-  DEFINE_WRAPPERTYPEINFO();
+ public:
+  const WrapperTypeInfo* wrapperTypeInfo() const override {
+    return &s_wrapperTypeInfoOverride;
+  }
+
+ private:
+  // We want to overload in blink V8-provided APIs - namely, WebAssembly.compile
+  // and WebAssembly.instantiate. Refer to:
+  // https://github.com/WebAssembly/design/blob/master/Web.md#additional-web-embedding-api
+  //
+  // The overloads need to be implemented blink-side because they work with web
+  // APIs (Response). To achieve this, we use purposefully-built injection
+  // points exposed by V8 and initialize them when the Response APIs are
+  // initialized. At the moment, this requires working around the generated
+  // code: we redefine the WrapperTypeInfo and insert the installerOveride,
+  // which injects the overloads and then continues with the usual
+  // initialization.
+  //
+  // https://crbug.com/708238 for tracking.
+  static v8::Local<v8::FunctionTemplate> installerOverride(
+      v8::Isolate*,
+      const DOMWrapperWorld&);
+  static const WrapperTypeInfo& s_wrapperTypeInfo;
+  static const WrapperTypeInfo s_wrapperTypeInfoOverride;
+
   WTF_MAKE_NONCOPYABLE(Response);
 
  public:
   // These "create" function which takes a ScriptState* must be called with
   // entering an appropriate V8 context.
   // From Response.idl:
   static Response* create(ScriptState*, ExceptionState&);
   static Response* create(ScriptState*,
                           ScriptValue body,
                           const ResponseInit&,
@@ skipping 69 matching lines @@
   void installBody();
   void refreshBody(ScriptState*);
 
   const Member<FetchResponseData> m_response;
   const Member<Headers> m_headers;
 };
 
 }  // namespace blink
 
 #endif  // Response_h