Removes some post-refactor left over dead code

Following some earlier Onion Soup refactoring,
blink::PrivacyPreferences has no usage---only a couple scary
comments in renderer_preferences.mojom warning to keep fields "in sync"
with PrivacyPreferences.

This change deletes the dead PrivacyPreferences code and the scary
comments.

R=shimazu

Bug: 869748
Change-Id: If95f5da0fe40ec6507d34b8985b8c13f5685f3ad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1833707
Auto-Submit: David Van Cleve <davidvc@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#702038}

content/renderer/service_worker/embedded_worker_instance_client_impl.cc

@@ -175,9 +175,6 @@ EmbeddedWorkerInstanceClientImpl::BuildStartData(
           ? blink::WebEmbeddedWorkerStartData::kWaitForDebugger
           : blink::WebEmbeddedWorkerStartData::kDontWaitForDebugger;
   start_data->devtools_worker_token = params.devtools_worker_token;
-  start_data->privacy_preferences = blink::PrivacyPreferences(
-      params.renderer_preferences->enable_do_not_track,
-      params.renderer_preferences->enable_referrers);
   return start_data;
 }
 

content/renderer/service_worker/embedded_worker_instance_client_impl.h

@@ -11,7 +11,6 @@
 #include "content/common/content_export.h"
 #include "mojo/public/cpp/bindings/pending_receiver.h"
 #include "mojo/public/cpp/bindings/receiver.h"
-#include "third_party/blink/public/common/privacy_preferences.h"
 #include "third_party/blink/public/mojom/service_worker/embedded_worker.mojom.h"
 #include "third_party/blink/public/mojom/service_worker/service_worker_installed_scripts_manager.mojom.h"
 #include "third_party/blink/public/mojom/worker/worker_content_settings_proxy.mojom.h"

third_party/blink/common/BUILD.gn

@@ -79,7 +79,6 @@ jumbo_source_set("common") {
     "origin_trials/trial_token_validator.cc",
     "page/page_zoom.cc",
     "peerconnection/webrtc_ip_handling_policy.cc",
-    "privacy_preferences.cc",
     "scheduler/web_scheduler_tracked_feature.cc",
     "service_worker/service_worker_status_code.cc",
     "service_worker/service_worker_type_converters.cc",

third_party/blink/common/privacy_preferences.cc

-// Copyright 2018 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 "third_party/blink/public/common/privacy_preferences.h"
-
-namespace blink {
-
-PrivacyPreferences::PrivacyPreferences(bool enable_do_not_track,
-                                       bool enable_referrers)
-    : enable_do_not_track(enable_do_not_track),
-      enable_referrers(enable_referrers) {}
-
-}  // namespace blink

third_party/blink/public/common/BUILD.gn

@@ -115,7 +115,6 @@ source_set("headers") {
     "page/page_zoom.h",
     "peerconnection/webrtc_ip_handling_policy.h",
     "prerender/prerender_rel_type.h",
-    "privacy_preferences.h",
     "scheduler/web_scheduler_tracked_feature.h",
     "screen_orientation/web_screen_orientation_lock_type.h",
     "screen_orientation/web_screen_orientation_type.h",

third_party/blink/public/common/privacy_preferences.h

-// Copyright 2018 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.
-
-#ifndef THIRD_PARTY_BLINK_PUBLIC_COMMON_PRIVACY_PREFERENCES_H_
-#define THIRD_PARTY_BLINK_PUBLIC_COMMON_PRIVACY_PREFERENCES_H_
-
-#include "third_party/blink/public/common/common_export.h"
-
-namespace blink {
-
-// Subset of content::RendererPreferences for passing the security info to
-// blink.
-// TODO(crbug.com/869748): Move this into a mojom struct and use the new struct
-// as a part of RendererPreferences once RendererPreferences becomes a mojom
-// struct.
-struct BLINK_COMMON_EXPORT PrivacyPreferences {
-  PrivacyPreferences() = default;
-  PrivacyPreferences(bool enable_do_not_track,
-                     bool enable_referrers);
-
-  // These default values are coming from the defaults in
-  // content::RendererPreferences.
-  bool enable_do_not_track = false;
-  bool enable_referrers = true;
-};
-
-}  // namespace blink
-
-#endif  // THIRD_PARTY_BLINK_PUBLIC_COMMON_PRIVACY_PREFERENCES_H_

third_party/blink/public/mojom/renderer_preferences.mojom

@@ -63,7 +63,6 @@ struct RendererPreferences {
   bool use_custom_colors = true;
 
   // Set to false to not send referrers.
-  // The default value should be in sync with blink::PrivacyPreferences.
   bool enable_referrers = true;
 
   // Set to true to allow third-party sub-content to pop-up HTTP basic auth
@@ -71,7 +70,6 @@ struct RendererPreferences {
   bool allow_cross_origin_auth_prompt = false;
 
   // Set to true to indicate that the preference to set DNT to 1 is enabled.
-  // The default value should be in sync with blink::PrivacyPreferences.
   bool enable_do_not_track = false;
 
   // Whether to allow the use of Encrypted Media Extensions (EME), except for

third_party/blink/public/web/web_embedded_worker_start_data.h

@@ -33,7 +33,6 @@
 
 #include "base/unguessable_token.h"
 #include "services/network/public/mojom/ip_address_space.mojom-shared.h"
-#include "third_party/blink/public/common/privacy_preferences.h"
 #include "third_party/blink/public/mojom/service_worker/service_worker_registration.mojom-shared.h"
 #include "third_party/blink/public/platform/web_content_security_policy.h"
 #include "third_party/blink/public/platform/web_string.h"
@@ -56,8 +55,6 @@ struct WebEmbeddedWorkerStartData {
 
   network::mojom::IPAddressSpace address_space;
 
-  PrivacyPreferences privacy_preferences;
-
   WebEmbeddedWorkerStartData() : wait_for_debugger_mode(kDontWaitForDebugger) {}
 };