Move ScriptWrappable and dependencies to platform/bindings

third_party/WebKit/Source/bindings/core/v8/V8PerContextData.h

 /*
  * Copyright (C) 2012 Google Inc. 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 10 matching lines @@
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef V8PerContextData_h
-#define V8PerContextData_h
-
-#include <memory>
-
-#include "bindings/core/v8/ScopedPersistent.h"
-#include "bindings/core/v8/V0CustomElementBinding.h"
-#include "bindings/core/v8/V8GlobalValueMap.h"
-#include "bindings/core/v8/WrapperTypeInfo.h"
-#include "core/CoreExport.h"
-#include "gin/public/context_holder.h"
-#include "gin/public/gin_embedders.h"
-#include "platform/wtf/Allocator.h"
-#include "platform/wtf/HashMap.h"
-#include "platform/wtf/Vector.h"
-#include "platform/wtf/text/AtomicString.h"
-#include "platform/wtf/text/AtomicStringHash.h"
-#include "v8/include/v8.h"
-
-namespace blink {
-
-class V8DOMActivityLogger;
-class V8PerContextData;
-
-enum V8ContextEmbedderDataField {
-  kV8ContextPerContextDataIndex =
-      static_cast<int>(gin::kPerContextDataStartIndex + gin::kEmbedderBlink),
-};
-
-class CORE_EXPORT V8PerContextData final {
-  USING_FAST_MALLOC(V8PerContextData);
-  WTF_MAKE_NONCOPYABLE(V8PerContextData);
-
- public:
-  static std::unique_ptr<V8PerContextData> Create(v8::Local<v8::Context>);
-
-  static V8PerContextData* From(v8::Local<v8::Context>);
-
-  ~V8PerContextData();
-
-  v8::Local<v8::Context> GetContext() { return context_.NewLocal(isolate_); }
-
-  // To create JS Wrapper objects, we create a cache of a 'boiler plate'
-  // object, and then simply Clone that object each time we need a new one.
-  // This is faster than going through the full object creation process.
-  v8::Local<v8::Object> CreateWrapperFromCache(const WrapperTypeInfo* type) {
-    v8::Local<v8::Object> boilerplate = wrapper_boilerplates_.Get(type);
-    return !boilerplate.IsEmpty() ? boilerplate->Clone()
-                                  : CreateWrapperFromCacheSlowCase(type);
-  }
-
-  v8::Local<v8::Function> ConstructorForType(const WrapperTypeInfo* type) {
-    v8::Local<v8::Function> interface_object = constructor_map_.Get(type);
-    return (!interface_object.IsEmpty()) ? interface_object
-                                         : ConstructorForTypeSlowCase(type);
-  }
-
-  v8::Local<v8::Object> PrototypeForType(const WrapperTypeInfo*);
-
-  // Gets the constructor and prototype for a type, if they have already been
-  // created. Returns true if they exist, and sets the existing values in
-  // |prototypeObject| and |interfaceObject|. Otherwise, returns false, and the
-  // values are set to empty objects (non-null).
-  bool GetExistingConstructorAndPrototypeForType(
-      const WrapperTypeInfo*,
-      v8::Local<v8::Object>* prototype_object,
-      v8::Local<v8::Function>* interface_object);
-
-  void AddCustomElementBinding(std::unique_ptr<V0CustomElementBinding>);
-
-  V8DOMActivityLogger* ActivityLogger() const { return activity_logger_; }
-  void SetActivityLogger(V8DOMActivityLogger* activity_logger) {
-    activity_logger_ = activity_logger;
-  }
-
-  // Garbage collected classes that use V8PerContextData to hold an instance
-  // should subclass Data, and use addData / clearData / getData to manage the
-  // instance.
-  class CORE_EXPORT Data : public GarbageCollectedMixin {};
-
-  void AddData(const char* key, Data*);
-  void ClearData(const char* key);
-  Data* GetData(const char* key);
-
- private:
-  V8PerContextData(v8::Local<v8::Context>);
-
-  v8::Local<v8::Object> CreateWrapperFromCacheSlowCase(const WrapperTypeInfo*);
-  v8::Local<v8::Function> ConstructorForTypeSlowCase(const WrapperTypeInfo*);
-
-  v8::Isolate* isolate_;
-
-  // For each possible type of wrapper, we keep a boilerplate object.
-  // The boilerplate is used to create additional wrappers of the same type.
-  typedef V8GlobalValueMap<const WrapperTypeInfo*, v8::Object, v8::kNotWeak>
-      WrapperBoilerplateMap;
-  WrapperBoilerplateMap wrapper_boilerplates_;
-
-  typedef V8GlobalValueMap<const WrapperTypeInfo*, v8::Function, v8::kNotWeak>
-      ConstructorMap;
-  ConstructorMap constructor_map_;
-
-  std::unique_ptr<gin::ContextHolder> context_holder_;
-
-  ScopedPersistent<v8::Context> context_;
-  ScopedPersistent<v8::Value> error_prototype_;
-
-  typedef Vector<std::unique_ptr<V0CustomElementBinding>>
-      V0CustomElementBindingList;
-  V0CustomElementBindingList custom_element_bindings_;
-
-  // This is owned by a static hash map in V8DOMActivityLogger.
-  V8DOMActivityLogger* activity_logger_;
-
-  using DataMap = PersistentHeapHashMap<const char*, Member<Data>>;
-  DataMap data_map_;
-};
-
-}  // namespace blink
-
-#endif  // V8PerContextData_h
+// This file has been moved to platform/bindings/V8PerContextData.h.
+// TODO(adithyas): Remove this file.
+#include "platform/bindings/V8PerContextData.h"