Revert of Gather the ServiceWorker client information in the browser process.

content/common/service_worker/service_worker_client_info.cc

-// Copyright 2015 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/common/service_worker/service_worker_client_info.h"
-
-#include "base/logging.h"
-#include "content/common/service_worker/service_worker_types.h"
-
-namespace content {
-
-ServiceWorkerClientInfo::ServiceWorkerClientInfo()
-  : client_id(kInvalidServiceWorkerClientId),
-    page_visibility_state(blink::WebPageVisibilityStateLast),
-    is_focused(false),
-    frame_type(REQUEST_CONTEXT_FRAME_TYPE_LAST) {
-}
-
-ServiceWorkerClientInfo::ServiceWorkerClientInfo(
-    blink::WebPageVisibilityState page_visibility_state,
-    bool is_focused,
-    const GURL& url,
-    RequestContextFrameType frame_type)
-    : client_id(kInvalidServiceWorkerClientId),
-      page_visibility_state(page_visibility_state),
-      is_focused(is_focused),
-      url(url),
-      frame_type(frame_type) {
-}
-
-bool ServiceWorkerClientInfo::IsEmpty() const {
-  return page_visibility_state == blink::WebPageVisibilityStateLast &&
-         is_focused == false &&
-         url.is_empty() &&
-         frame_type == REQUEST_CONTEXT_FRAME_TYPE_LAST;
-}
-
-bool ServiceWorkerClientInfo::IsValid() const {
-  return !IsEmpty() && client_id != kInvalidServiceWorkerClientId;
-}
-
-}  // namespace content