Move stash_backend into extensions/browser/mojo.

extensions/browser/stash_backend.cc

-// Copyright 2014 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 "extensions/browser/stash_backend.h"
-
-namespace extensions {
-
-// An implementation of StashService that forwards calls to a StashBackend.
-class StashServiceImpl : public mojo::InterfaceImpl<StashService> {
- public:
-  explicit StashServiceImpl(base::WeakPtr<StashBackend> backend);
-  ~StashServiceImpl() override;
-
-  // mojo::InterfaceImpl<StashService> overrides.
-  void AddToStash(mojo::Array<StashedObjectPtr> stash) override;
-  void RetrieveStash(
-      const mojo::Callback<void(mojo::Array<StashedObjectPtr> stash)>& callback)
-      override;
-
- private:
-  base::WeakPtr<StashBackend> backend_;
-
-  DISALLOW_COPY_AND_ASSIGN(StashServiceImpl);
-};
-
-StashBackend::StashBackend() : weak_factory_(this) {
-}
-
-StashBackend::~StashBackend() {
-}
-
-void StashBackend::AddToStash(mojo::Array<StashedObjectPtr> stashed_objects) {
-  for (size_t i = 0; i < stashed_objects.size(); i++) {
-    stashed_objects_.push_back(stashed_objects[i].Pass());
-  }
-}
-
-mojo::Array<StashedObjectPtr> StashBackend::RetrieveStash() {
-  if (stashed_objects_.is_null())
-    stashed_objects_.resize(0);
-  return stashed_objects_.Pass();
-}
-
-void StashBackend::BindToRequest(mojo::InterfaceRequest<StashService> request) {
-  mojo::BindToRequest(new StashServiceImpl(weak_factory_.GetWeakPtr()),
-                      &request);
-}
-
-StashServiceImpl::StashServiceImpl(base::WeakPtr<StashBackend> backend)
-    : backend_(backend) {
-}
-
-StashServiceImpl::~StashServiceImpl() {
-}
-
-void StashServiceImpl::AddToStash(
-    mojo::Array<StashedObjectPtr> stashed_objects) {
-  if (!backend_)
-    return;
-  backend_->AddToStash(stashed_objects.Pass());
-}
-
-void StashServiceImpl::RetrieveStash(
-    const mojo::Callback<void(mojo::Array<StashedObjectPtr>)>& callback) {
-  if (!backend_) {
-    callback.Run(mojo::Array<StashedObjectPtr>(0));
-    return;
-  }
-  callback.Run(backend_->RetrieveStash());
-}
-
-}  // namespace extensions