Initial implementation of bindings and basic classes for worklets.

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

+// 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 ModuleProxy_h
+#define ModuleProxy_h
+
+#include "core/CoreExport.h"
+#include "wtf/Allocator.h"
+#include "wtf/StdLibExtras.h"
+#include <v8.h>
+
+namespace blink {
+
+class ExecutionContext;
+
+// A proxy class to invoke functions implemented in bindings/modules
+// from bindings/core.
+class CORE_EXPORT ModuleProxy {
+    USING_FAST_MALLOC(ModuleProxy);
+public:
+    static ModuleProxy& moduleProxy()
+    {
+        DEFINE_STATIC_LOCAL(ModuleProxy, moduleProxy, ());
+        return moduleProxy;
+    }
+
+    ExecutionContext* toExecutionContextForModules(v8::Local<v8::Context> context)
+    {
+        RELEASE_ASSERT(m_toExecutionContextForModules);
+        return (*m_toExecutionContextForModules)(context);
+    }
+
+    void registerToExecutionContextForModules(ExecutionContext* (*toExecutionContextForModules)(v8::Local<v8::Context>))
+    {
+        m_toExecutionContextForModules = toExecutionContextForModules;
+    }
+
+    v8::Local<v8::Context> toV8ContextForModules(ExecutionContext* context)
+    {
+        RELEASE_ASSERT(m_toV8ContextForModules);
+        return (*m_toV8ContextForModules)(context);
+    }
+
+    void registerToV8ContextForModules(v8::Local<v8::Context> (*toV8ContextForModules)(ExecutionContext*))
+    {
+        m_toV8ContextForModules = toV8ContextForModules;
+    }
+
+private:
+    ModuleProxy() { }
+
+    ExecutionContext* (*m_toExecutionContextForModules)(v8::Local<v8::Context>) = nullptr;
+    v8::Local<v8::Context> (*m_toV8ContextForModules)(ExecutionContext*) = nullptr;
+};
+
+} // namespace blink
+
+#endif // ModuleProxy_h