Replace hand-written IDBObserverCallback with auto-generated code

third_party/WebKit/Source/bindings/modules/v8/V8IDBObserverCallback.cpp

-// 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.
-
-#include "bindings/modules/v8/V8IDBObserverCallback.h"
-
-#include "bindings/core/v8/ScriptController.h"
-#include "bindings/core/v8/ToV8.h"
-#include "bindings/core/v8/V8Binding.h"
-#include "bindings/core/v8/V8PrivateProperty.h"
-#include "bindings/modules/v8/V8IDBObserver.h"
-#include "bindings/modules/v8/V8IDBObserverChanges.h"
-#include "wtf/Assertions.h"
-
-namespace blink {
-
-V8IDBObserverCallback::V8IDBObserverCallback(v8::Local<v8::Function> callback,
-                                             v8::Local<v8::Object> owner,
-                                             ScriptState* scriptState)
-    : ActiveDOMCallback(scriptState->getExecutionContext()),
-      m_callback(scriptState->isolate(), callback),
-      m_scriptState(scriptState) {
-  V8PrivateProperty::getIDBObserverCallback(scriptState->isolate())
-      .set(scriptState->context(), owner, callback);
-  m_callback.setPhantom();
-}
-
-V8IDBObserverCallback::~V8IDBObserverCallback() {}
-
-void V8IDBObserverCallback::handleChanges(IDBObserverChanges& changes,
-                                          IDBObserver& observer) {
-  if (!canInvokeCallback())
-    return;
-
-  if (!m_scriptState->contextIsValid())
-    return;
-  ScriptState::Scope scope(m_scriptState.get());
-
-  if (m_callback.isEmpty())
-    return;
-  v8::Local<v8::Value> observerHandle = toV8(
-      &observer, m_scriptState->context()->Global(), m_scriptState->isolate());
-  if (!observerHandle->IsObject())
-    return;
-
-  v8::Local<v8::Object> thisObject =
-      v8::Local<v8::Object>::Cast(observerHandle);
-  v8::Local<v8::Value> changesHandle = toV8(
-      &changes, m_scriptState->context()->Global(), m_scriptState->isolate());
-  if (changesHandle.IsEmpty())
-    return;
-
-  v8::Local<v8::Value> argv[] = {changesHandle};
-
-  V8ScriptRunner::callFunction(m_callback.newLocal(m_scriptState->isolate()),
-                               m_scriptState->getExecutionContext(), thisObject,
-                               WTF_ARRAY_LENGTH(argv), argv,
-                               m_scriptState->isolate());
-}
-
-DEFINE_TRACE(V8IDBObserverCallback) {
-  IDBObserverCallback::trace(visitor);
-  ActiveDOMCallback::trace(visitor);
-}
-
-}  // namespace blink