Move PermissionRequestID to chrome/browser/permissions/.

components/content_settings/core/common/permission_request_id.cc

-// Copyright 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 "components/content_settings/core/common/permission_request_id.h"
-
-#include "base/strings/stringprintf.h"
-
-PermissionRequestID::PermissionRequestID(int render_process_id,
-                                         int render_frame_id,
-                                         int bridge_id,
-                                         const GURL& origin)
-    : render_process_id_(render_process_id),
-      render_frame_id_(render_frame_id),
-      bridge_id_(bridge_id),
-      origin_(origin) {
-}
-
-PermissionRequestID::~PermissionRequestID() {
-}
-
-bool PermissionRequestID::Equals(const PermissionRequestID& other) const {
-  return render_process_id_ == other.render_process_id_ &&
-         render_frame_id_ == other.render_frame_id_ &&
-         bridge_id_ == other.bridge_id_ &&
-         origin_ == other.origin_;
-}
-
-std::string PermissionRequestID::ToString() const {
-  return base::StringPrintf("%d,%d,%d,%s",
-                            render_process_id_,
-                            render_frame_id_,
-                            bridge_id_,
-                            origin_.spec().c_str());
-}