Revert of [Bindings] Create and use V8 context snapshots

third_party/WebKit/Source/bindings/core/v8/V8ContextSnapshot.h

Index: third_party/WebKit/Source/bindings/core/v8/V8ContextSnapshot.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8ContextSnapshot.h b/third_party/WebKit/Source/bindings/core/v8/V8ContextSnapshot.h
deleted file mode 100644
index 43233585064eb0271dc5f572f725d6053dfbe4b7..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/bindings/core/v8/V8ContextSnapshot.h
+++ /dev/null
@@ -1,79 +0,0 @@
-// Copyright 2017 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 V8ContextSnapshot_h
-#define V8ContextSnapshot_h
-
-#include "core/CoreExport.h"
-#include "platform/wtf/Allocator.h"
-#include "v8/include/v8.h"
-
-namespace blink {
-
-class Document;
-class DOMWrapperWorld;
-
-// This class contains helper functions to take and use a V8 context snapshot.
-//
-// The V8 context snapshot is taken by tools/v8_context_snapshot/ when Chromium
-// is built, and is used when Blink creates a new V8 context. When to build or
-// to use the V8 context snapshot, you have a table of references of C++
-// callbacks exposed to V8.
-//
-// A V8 context snapshot contains:
-// - Interface templates of Window, EventTarget, Node, Document, and
-//   HTMLDocument.
-// - Two types of V8 contexts; one is for the main world, and the other is for
-//   other worlds.
-// - HTMLDocument's wrapper (window.document) in the context for the main
-//   world.
-//
-// Currently, the V8 context snapshot supports only the main thread. If it is
-// the main world, we need a special logic to serialize / deserialize
-// window.document (so only HTMLDocument is supported on the main world).
-// Worker threads are not yet supported.
-class CORE_EXPORT V8ContextSnapshot {
-  STATIC_ONLY(V8ContextSnapshot);
-
- public:
-  static v8::Local<v8::Context> CreateContextFromSnapshot(
-      v8::Isolate*,
-      const DOMWrapperWorld&,
-      v8::ExtensionConfiguration*,
-      v8::Local<v8::Object> global_proxy,
-      Document*);
-  // Install runtime enabled features on some v8::Object's in a context
-  // created from a snapshot.
-  static void InstallRuntimeEnabledFeatures(v8::Local<v8::Context>, Document*);
-
-  static void EnsureInterfaceTemplates(v8::Isolate*);
-
-  static void SetReferenceTable(intptr_t* table);
-  static intptr_t* GetReferenceTable();
-
-  // Do not call this in production.
-  static v8::StartupData TakeSnapshot();
-
- private:
-  static v8::StartupData SerializeInternalField(v8::Local<v8::Object> holder,
-                                                int index,
-                                                void* data);
-  static void DeserializeInternalField(v8::Local<v8::Object> holder,
-                                       int index,
-                                       v8::StartupData payload,
-                                       void* data);
-  static bool CanCreateContextFromSnapshot(v8::Isolate*,
-                                           const DOMWrapperWorld&,
-                                           Document*);
-
-  static void EnsureInterfaceTemplatesForWorld(v8::Isolate*,
-                                               const DOMWrapperWorld&);
-
-  static void TakeSnapshotForWorld(v8::SnapshotCreator*,
-                                   const DOMWrapperWorld&);
-};
-
-}  // namespace blink
-
-#endif  // V8ContextSnapshot_h