Keep disabled FetchLaterAPI: fix the bypass for same-site requests (#2456)

build/patches/Keep-disabled-FetchLaterAPI.patch

@@ -13,10 +13,10 @@ License: GPL-2.0-or-later - https://spdx.org/licenses/GPL-2.0-or-later.html
  .../browser/loader/keep_alive_url_loader.h    |  3 --
  .../Keep-disabled-FetchLaterAPI.inc           |  1 +
  .../renderer/core/fetch/fetch_manager.cc      | 21 ++++++++++--
- .../loader/child_url_loader_factory_bundle.cc | 16 +++++++++
+ .../loader/child_url_loader_factory_bundle.cc | 20 +++++++++--
  .../platform/loader/fetch/resource_fetcher.cc |  2 +-
  .../platform/runtime_enabled_features.json5   |  4 +--
- 7 files changed, 70 insertions(+), 10 deletions(-)
+ 7 files changed, 72 insertions(+), 12 deletions(-)
  create mode 100644 cromite_flags/third_party/blink/common/features_cc/Keep-disabled-FetchLaterAPI.inc
 
 diff --git a/content/browser/loader/keep_alive_url_loader.cc b/content/browser/loader/keep_alive_url_loader.cc
@@ -153,7 +153,7 @@ diff --git a/third_party/blink/renderer/platform/loader/child_url_loader_factory
  #include "services/network/public/cpp/record_ontransfersizeupdate_utils.h"
  #include "services/network/public/cpp/resource_request.h"
  #include "services/network/public/mojom/early_hints.mojom.h"
-@@ -250,6 +251,20 @@ void ChildURLLoaderFactoryBundle::CreateLoaderAndStart(
+@@ -250,16 +251,31 @@ void ChildURLLoaderFactoryBundle::CreateLoaderAndStart(
      return;
    }
  
@@ -174,9 +174,14 @@ diff --git a/third_party/blink/renderer/platform/loader/child_url_loader_factory
    // Use |keep_alive_loader_factory_| to send the keepalive requests to the
    // KeepAliveURLLoaderService in the browser process and trigger the special
    // keepalive request handling.
-@@ -260,6 +275,7 @@ void ChildURLLoaderFactoryBundle::CreateLoaderAndStart(
+   // |keep_alive_loader_factory_| only presents when
+   // features::kKeepAliveInBrowserMigration is true.
+-  if (request.keepalive) {
++  if (keepalive) {
+     FetchUtils::LogFetchKeepAliveRequestSentToServiceMetric(request);
    }
-   if (request.keepalive && keep_alive_loader_factory_ &&
+-  if (request.keepalive && keep_alive_loader_factory_ &&
++  if (keepalive && keep_alive_loader_factory_ &&
        base::FeatureList::IsEnabled(features::kKeepAliveInBrowserMigration)) {
 +    // use keep alive loader on the browser side
      keep_alive_loader_factory_->CreateLoaderAndStart(