Adds media license nodes to cookie tree model and cookies view.

chrome/browser/browsing_data/browsing_data_media_license_helper.cc

+// 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 "chrome/browser/browsing_data/browsing_data_media_license_helper.h"
+
+#include <memory>
+#include <set>
+
+#include "base/bind.h"
+#include "base/location.h"
+#include "base/macros.h"
+#include "base/sequenced_task_runner.h"
+#include "chrome/browser/browsing_data/browsing_data_helper.h"
+#include "content/public/browser/browser_thread.h"
+#include "storage/browser/fileapi/file_system_context.h"
+#include "storage/browser/fileapi/file_system_quota_util.h"
+#include "storage/browser/fileapi/plugin_private_file_system_backend.h"
+#include "storage/common/fileapi/file_system_types.h"
+
+using content::BrowserThread;
+
+namespace {
+
+// An implementation of the BrowsingDataMediaLicenseHelper interface that
+// determine data on media licenses in a given |filesystem_context| and
+// returns a list of MediaLicenseInfo items to a client.
+class BrowsingDataMediaLicenseHelperImpl
+    : public BrowsingDataMediaLicenseHelper {
+ public:
+  // BrowsingDataMediaLicenseHelper implementation
+  explicit BrowsingDataMediaLicenseHelperImpl(
+      storage::FileSystemContext* filesystem_context);
+  void StartFetching(const FetchCallback& callback) final;
+  void DeleteMediaLicenseOrigin(const GURL& origin) final;
+
+ private:
+  ~BrowsingDataMediaLicenseHelperImpl() final;
+
+  // Enumerates all filesystem files, storing the resulting list into
+  // file_system_file_ for later use. This must be called on the file
+  // task runner.
+  void FetchMediaLicenseInfoOnFileTaskRunner(const FetchCallback& callback);
+
+  // Deletes all file systems associated with |origin|. This must be called on
+  // the file task runner.
+  void DeleteMediaLicenseOriginOnFileTaskRunner(const GURL& origin);
+
+  // Returns the file task runner for the |filesystem_context_|.
+  base::SequencedTaskRunner* file_task_runner() {
+    return filesystem_context_->default_file_task_runner();
+  }
+
+  // Keep a reference to the FileSystemContext object for the current profile
+  // for use on the file task runner.
+  scoped_refptr<storage::FileSystemContext> filesystem_context_;
+
+  DISALLOW_COPY_AND_ASSIGN(BrowsingDataMediaLicenseHelperImpl);
+};
+
+BrowsingDataMediaLicenseHelperImpl::BrowsingDataMediaLicenseHelperImpl(
+    storage::FileSystemContext* filesystem_context)
+    : filesystem_context_(filesystem_context) {
+  DCHECK(filesystem_context_.get());
+}
+
+BrowsingDataMediaLicenseHelperImpl::~BrowsingDataMediaLicenseHelperImpl() {}
+
+void BrowsingDataMediaLicenseHelperImpl::StartFetching(
+    const FetchCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  DCHECK(!callback.is_null());
+  file_task_runner()->PostTask(
+      FROM_HERE, base::Bind(&BrowsingDataMediaLicenseHelperImpl::
+                                FetchMediaLicenseInfoOnFileTaskRunner,
+                            this, callback));
+}
+
+void BrowsingDataMediaLicenseHelperImpl::DeleteMediaLicenseOrigin(
+    const GURL& origin) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  file_task_runner()->PostTask(
+      FROM_HERE, base::Bind(&BrowsingDataMediaLicenseHelperImpl::
+                                DeleteMediaLicenseOriginOnFileTaskRunner,
+                            this, origin));
+}
+
+void BrowsingDataMediaLicenseHelperImpl::FetchMediaLicenseInfoOnFileTaskRunner(
+    const FetchCallback& callback) {
+  DCHECK(file_task_runner()->RunsTasksOnCurrentThread());
+  DCHECK(!callback.is_null());
+
+  const storage::FileSystemType kType = storage::kFileSystemTypePluginPrivate;
+
+  storage::PluginPrivateFileSystemBackend* backend =
+      static_cast<storage::PluginPrivateFileSystemBackend*>(
+          filesystem_context_->GetFileSystemBackend(kType));
+
+  // Determine the set of origins used.
+  std::set<GURL> origins;
+  std::list<MediaLicenseInfo> result;
+  backend->GetOriginsForTypeOnFileTaskRunner(kType, &origins);
+  for (const GURL& origin : origins) {
+    if (!BrowsingDataHelper::HasWebScheme(origin))
+      continue;  // Non-websafe state is not considered browsing data.
+
+    int64_t size;
+    base::Time last_modified_time;
+    backend->GetOriginDetailsOnFileTaskRunner(filesystem_context_.get(), origin,
+                                              &size, &last_modified_time);
+    result.push_back(MediaLicenseInfo(origin, size, last_modified_time));
+  }
+
+  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+                          base::Bind(callback, result));
+}
+
+void BrowsingDataMediaLicenseHelperImpl::
+    DeleteMediaLicenseOriginOnFileTaskRunner(const GURL& origin) {
+  DCHECK(file_task_runner()->RunsTasksOnCurrentThread());
+
+  const storage::FileSystemType kType = storage::kFileSystemTypePluginPrivate;
+  storage::FileSystemBackend* backend =
+      filesystem_context_->GetFileSystemBackend(kType);
+  storage::FileSystemQuotaUtil* quota_util = backend->GetQuotaUtil();
+  quota_util->DeleteOriginDataOnFileTaskRunner(
+      filesystem_context_.get(), filesystem_context_->quota_manager_proxy(),
+      origin, kType);
+}
+
+}  // namespace
+
+BrowsingDataMediaLicenseHelper::MediaLicenseInfo::MediaLicenseInfo(
+    const GURL& origin,
+    int64_t size,
+    base::Time last_modified_time)
+    : origin(origin), size(size), last_modified_time(last_modified_time) {}
+
+BrowsingDataMediaLicenseHelper::MediaLicenseInfo::MediaLicenseInfo(
+    const MediaLicenseInfo& other) = default;
+
+BrowsingDataMediaLicenseHelper::MediaLicenseInfo::~MediaLicenseInfo() {}
+
+// static
+BrowsingDataMediaLicenseHelper* BrowsingDataMediaLicenseHelper::Create(
+    storage::FileSystemContext* filesystem_context) {
+  return new BrowsingDataMediaLicenseHelperImpl(filesystem_context);
+}