Move webkit/blob to new locations.

webkit/blob/blob_data_handle.cc

-// Copyright (c) 2013 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 "webkit/blob/blob_data_handle.h"
-
-#include "base/bind.h"
-#include "base/location.h"
-#include "base/logging.h"
-#include "base/sequenced_task_runner.h"
-#include "webkit/blob/blob_data.h"
-#include "webkit/blob/blob_storage_context.h"
-
-namespace webkit_blob {
-
-BlobDataHandle::BlobDataHandle(BlobData* blob_data, BlobStorageContext* context,
-                               base::SequencedTaskRunner* task_runner)
-    : blob_data_(blob_data),
-      context_(context->AsWeakPtr()),
-      io_task_runner_(task_runner) {
-  // Ensures the uuid remains registered and the underlying data is not deleted.
-  DCHECK(io_task_runner_->RunsTasksOnCurrentThread());
-  context_->IncrementBlobRefCount(blob_data->uuid());
-  blob_data_->AddRef();
-}
-
-BlobDataHandle::~BlobDataHandle() {
-  if (io_task_runner_->RunsTasksOnCurrentThread()) {
-    // Note: Do not test context_ or alter the blob_data_ refcount
-    // on the wrong thread.
-    if (context_)
-      context_->DecrementBlobRefCount(blob_data_->uuid());
-    blob_data_->Release();
-    return;
-  }
-
-  io_task_runner_->PostTask(
-      FROM_HERE,
-      base::Bind(&DeleteHelper, context_, base::Unretained(blob_data_)));
-}
-
-BlobData* BlobDataHandle::data() const {
-  DCHECK(io_task_runner_->RunsTasksOnCurrentThread());
-  return blob_data_;
-}
-
-// static
-void BlobDataHandle::DeleteHelper(
-    base::WeakPtr<BlobStorageContext> context,
-    BlobData* blob_data) {
-  if (context)
-    context->DecrementBlobRefCount(blob_data->uuid());
-  blob_data->Release();
-}
-
-}  // namespace webkit_blob