DevTools: introduce Storage.clearDataForOrigin protocol command.

content/browser/devtools/protocol/storage_handler.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 "content/browser/devtools/protocol/storage_handler.h"
+
+#include <string>
+#include <unordered_set>
+#include <vector>
+
+#include "base/strings/string_split.h"
+#include "content/browser/devtools/protocol/devtools_protocol_dispatcher.h"
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/storage_partition.h"
+
+namespace content {
+namespace devtools {
+namespace storage {
+
+namespace {
+static const char kAppCache[] = "appcache";
+static const char kCookies[] = "cookies";
+static const char kFileSystems[] = "filesystems";
+static const char kIndexedDB[] = "indexeddb";
+static const char kLocalStorage[] = "local_storage";
+static const char kShaderCache[] = "shader_cache";
+static const char kWebSQL[] = "websql";
+static const char kWebRTCIdentity[] = "webrdc_identity";
+static const char kServiceWorkers[] = "service_workers";
+static const char kCacheStorage[] = "cache_storage";
+static const char kAll[] = "all";
+}
+
+typedef DevToolsProtocolClient::Response Response;
+
+StorageHandler::StorageHandler()
+    : host_(nullptr) {
+}
+
+StorageHandler::~StorageHandler() = default;
+
+void StorageHandler::SetRenderFrameHost(RenderFrameHost* host) {
+  host_ = host;
+}
+
+Response StorageHandler::ClearDataForOrigin(
+    const std::string& origin,
+    const std::string& storage_types) {
+  if (!host_)
+    return Response::InternalError("Not connected to host");
+
+  StoragePartition* partition = host_->GetProcess()->GetStoragePartition();
+  std::vector<std::string> types = base::SplitString(
+      storage_types, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
+  std::unordered_set<std::string> set(types.begin(), types.end());
+  uint32_t remove_mask = 0;
+  if (set.find(kAppCache) != set.end())

[caseq, 2016/05/06 18:13:08]

nit:

since you're using set, just

if (set.count(kAppCache)) ...

+    remove_mask |= StoragePartition::REMOVE_DATA_MASK_APPCACHE;
+  if (set.find(kCookies) != set.end())
+    remove_mask |= StoragePartition::REMOVE_DATA_MASK_COOKIES;
+  if (set.find(kFileSystems) != set.end())
+    remove_mask |= StoragePartition::REMOVE_DATA_MASK_FILE_SYSTEMS;
+  if (set.find(kIndexedDB) != set.end())
+    remove_mask |= StoragePartition::REMOVE_DATA_MASK_INDEXEDDB;
+  if (set.find(kLocalStorage) != set.end())
+    remove_mask |= StoragePartition::REMOVE_DATA_MASK_LOCAL_STORAGE;
+  if (set.find(kShaderCache) != set.end())
+    remove_mask |= StoragePartition::REMOVE_DATA_MASK_SHADER_CACHE;
+  if (set.find(kWebSQL) != set.end())
+    remove_mask |= StoragePartition::REMOVE_DATA_MASK_WEBSQL;
+  if (set.find(kWebRTCIdentity) != set.end())
+    remove_mask |= StoragePartition::REMOVE_DATA_MASK_WEBRTC_IDENTITY;
+  if (set.find(kServiceWorkers) != set.end())
+    remove_mask |= StoragePartition::REMOVE_DATA_MASK_SERVICE_WORKERS;
+  if (set.find(kCacheStorage) != set.end())
+    remove_mask |= StoragePartition::REMOVE_DATA_MASK_CACHE_STORAGE;
+  if (set.find(kAll) != set.end())
+    remove_mask |= StoragePartition::REMOVE_DATA_MASK_ALL;
+
+  if (!remove_mask)
+    return Response::InvalidParams("No valid storage type specified");
+
+  partition->ClearDataForOrigin(
+      remove_mask,
+      StoragePartition::QUOTA_MANAGED_STORAGE_MASK_ALL,
+      GURL(origin),
+      partition->GetURLRequestContext(),
+      base::Bind(&base::DoNothing));
+  return Response::OK();
+}
+
+}  // namespace storage
+}  // namespace devtools
+}  // namespace content