BASELINE: Update Chromium to 90.0.4430.221

Change-Id: Iff4d9d18d2fcf1a576f3b1f453010f744a232920
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 43 insertions, 0 deletions

diff --git a/chromium/third_party/blink/renderer/platform/loader/fetch/back_forward_cache_loader_helper.h b/chromium/third_party/blink/renderer/platform/loader/fetch/back_forward_cache_loader_helper.h
new file mode 100644
index 00000000000..ea87bb15a53
--- /dev/null
+++ b/chromium/third_party/blink/renderer/platform/loader/fetch/back_forward_cache_loader_helper.h
@@ -0,0 +1,43 @@
+// Copyright 2021 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_RENDERER_PLATFORM_LOADER_FETCH_BACK_FORWARD_CACHE_LOADER_HELPER_H_
+#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_LOADER_FETCH_BACK_FORWARD_CACHE_LOADER_HELPER_H_
+
+#include "third_party/blink/public/mojom/frame/back_forward_cache_controller.mojom-forward.h"
+#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
+#include "third_party/blink/renderer/platform/heap/heap.h"
+#include "third_party/blink/renderer/platform/heap/member.h"
+#include "third_party/blink/renderer/platform/platform_export.h"
+
+namespace blink {
+
+// Helper class for in-flight network request support for back-forward cache.
+class PLATFORM_EXPORT BackForwardCacheLoaderHelper
+    : public GarbageCollected<BackForwardCacheLoaderHelper> {
+ public:
+  // Evict the page from BackForwardCache. Should be called when handling an
+  // event which can't proceed if the page is in BackForwardCache and can't be
+  // easily deferred to handle later, for example network redirect handling.
+  virtual void EvictFromBackForwardCache(mojom::RendererEvictionReason reason) {
+  }
+
+  // Called when a network request buffered an additional `num_bytes` while the
+  // in back-forward cache. May be called multiple times.
+  virtual void DidBufferLoadWhileInBackForwardCache(size_t num_bytes) {}
+
+  // Returns true if we can still continue buffering data from in-flight network
+  // requests while in back-forward cache.
+  virtual bool CanContinueBufferingWhileInBackForwardCache() const {
+    return false;
+  }
+
+  virtual void Detach() {}
+
+  virtual void Trace(Visitor*) const {}
+};
+
+}  // namespace blink
+
+#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_LOADER_FETCH_BACK_FORWARD_CACHE_LOADER_HELPER_H_