OVFL A 1/2: scroll containers in the engine (overflow auto, scroll, clip; Blink scrollable overflow port)

THIRD_PARTY_NOTICES.md

@@ -21,12 +21,15 @@ Those files are under the licences below, with the copyright lines from their he
 - `third_party/blink/renderer/core/layout/block_layout_algorithm_utils.cc`: Copyright 2019 The Chromium Authors
 - `third_party/blink/renderer/core/layout/block_layout_algorithm.cc`: Copyright 2016 The Chromium Authors
 - `third_party/blink/renderer/core/layout/block_node.cc`: Copyright 2016 The Chromium Authors
+- `third_party/blink/renderer/core/layout/box_fragment_builder.cc`: Copyright 2016 The Chromium Authors
 - `third_party/blink/renderer/core/layout/flex/flex_layout_algorithm.cc`: Copyright 2018 The Chromium Authors
 - `third_party/blink/renderer/core/layout/flex/line_flexer.cc`: Copyright 2024 The Chromium Authors
 - `third_party/blink/renderer/core/layout/inline/fragment_item.cc`: Copyright 2019 The Chromium Authors
 - `third_party/blink/renderer/core/layout/inline/line_breaker.cc`: Copyright 2016 The Chromium Authors
 - `third_party/blink/renderer/core/layout/inline/line_utils.cc`: Copyright 2018 The Chromium Authors
 - `third_party/blink/renderer/core/layout/length_utils.cc`: Copyright 2016 The Chromium Authors
+- `third_party/blink/renderer/core/layout/scrollable_overflow_calculator.cc`: Copyright 2020 The Chromium Authors
+- `third_party/blink/renderer/core/layout/scrollable_overflow_calculator.h`: Copyright 2020 The Chromium Authors
 - `third_party/blink/renderer/core/paint/box_border_painter.cc`: Copyright 2015 The Chromium Authors
 - `third_party/blink/renderer/core/paint/contoured_border_geometry.cc`: Copyright 2020 The Chromium Authors
 - `third_party/blink/renderer/core/style/border_edge.cc`: Copyright 2014 The Chromium Authors

docs/ports.json

@@ -649,6 +649,21 @@
         { "file": "packages/layout/src/ratio.ts", "symbol": "ratioContentInlineSize", "use": "port" }
       ]
     },
+    {
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+      "licence": "bsd-chromium",
+      "noticeText": "chromium-bsd",
+      "licencePhrase": "Use of this source code is governed by a BSD-style license",
+      "copyright": "Copyright 2016 The Chromium Authors",
+      "fileSha256": "afafce938439bdf772b40da828dd43f52d847309be84687a8130d199982bcc85",
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+      ],
+      "dragon": [
+        { "file": "packages/layout/src/overflow.ts", "symbol": null, "use": "port" }
+      ]
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     {
       "upstream": "third_party/blink/renderer/core/layout/flex/flex_layout_algorithm.cc",
       "licence": "bsd-chromium",
@@ -859,6 +874,37 @@
         { "file": "packages/layout/src/replaced.ts", "symbol": "replacedSize", "use": "port" }
       ]
     },
+    {
+      "upstream": "third_party/blink/renderer/core/layout/scrollable_overflow_calculator.cc",
+      "licence": "bsd-chromium",
+      "noticeText": "chromium-bsd",
+      "licencePhrase": "Use of this source code is governed by a BSD-style license",
+      "copyright": "Copyright 2020 The Chromium Authors",
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+        { "file": "packages/layout/src/overflow.ts", "symbol": null, "use": "port" }
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+    {
+      "upstream": "third_party/blink/renderer/core/layout/scrollable_overflow_calculator.h",
+      "licence": "bsd-chromium",
+      "noticeText": "chromium-bsd",
+      "licencePhrase": "Use of this source code is governed by a BSD-style license",
+      "copyright": "Copyright 2020 The Chromium Authors",
+      "fileSha256": "6eb14649337a60418790968385bfdd1aad40267738b8e2bca10c59e0e3faffff",
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+      "ranges": [
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+        { "lines": "72-80", "symbol": "AddOverflow", "source": "located" }
+      ],
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+        { "file": "packages/layout/src/overflow.ts", "symbol": null, "use": "port" }
+      ]
+    },
     {
       "upstream": "third_party/blink/renderer/core/paint/box_border_painter.cc",
       "licence": "bsd-chromium",
@@ -905,6 +951,27 @@
         { "file": "packages/layout/test/paint-dash.test.ts", "symbol": null, "use": "reference" }
       ]
     },
+    {
+      "upstream": "third_party/blink/renderer/core/paint/paint_layer_scrollable_area.cc",
+      "licence": "lgpl",
+      "ruling": {
+        "class": "A",
+        "basis": "css-overflow-3 §2.2 (the scrollport is part of the scrollable overflow) and Chrome observation (one unite with the client size)",
+        "proof": [
+          "packages/layout/test/overflow.test.ts"
+        ]
+      },
+      "licencePhrase": "GNU Lesser General Public License",
+      "copyright": "Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights; Portions are Copyright (C) 1998 Netscape Communications Corporation.",
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     {
       "upstream": "third_party/blink/renderer/core/style/border_edge.cc",
       "licence": "bsd-chromium",