PNT1-effects 1/2: opacity as a native group alpha and z-index with Appendix E stacking (supersedes the opacity and stacking parts of #84-#85)

THIRD_PARTY_NOTICES.md

@@ -10,6 +10,7 @@ Those files are under the licences below, with the copyright lines from their he
 ## Chromium: BSD 3-Clause (the Chromium LICENSE file) (chromium-bsd)
 
 - `cc/layers/tile_size_calculator.cc`: Copyright 2019 The Chromium Authors
+- `cc/paint/paint_op_buffer_iterator.cc`: Copyright 2017 The Chromium Authors
 - `cc/trees/layer_tree_settings.cc`: Copyright 2011 The Chromium Authors
 - `third_party/blink/renderer/core/animation/animation_time_delta.h`: Copyright 2018 The Chromium Authors
 - `third_party/blink/renderer/core/animation/css/css_keyframe_effect_model.cc`: Copyright 2020 The Chromium Authors
@@ -98,10 +99,13 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ## Skia: BSD 3-Clause (the Skia LICENSE file) (skia-bsd)
 
+- `third_party/skia/include/core/SkPaint.h`: Copyright 2006 The Android Open Source Project
 - `third_party/skia/src/base/SkTSort.h`: Copyright 2006 The Android Open Source Project
 - `third_party/skia/src/core/SkAnalyticEdge.cpp`: Copyright 2006 The Android Open Source Project
+- `third_party/skia/src/core/SkBlitRow_D32.cpp`: Copyright 2011 Google Inc.
 - `third_party/skia/src/core/SkBlurMask.cpp`: Copyright 2006 The Android Open Source Project
 - `third_party/skia/src/core/SkBlurMaskFilterImpl.cpp`: Copyright 2006 The Android Open Source Project
+- `third_party/skia/src/core/SkColorData.h`: Copyright 2006 The Android Open Source Project
 - `third_party/skia/src/core/SkDraw.cpp`: Copyright 2006 The Android Open Source Project
 - `third_party/skia/src/core/SkEdgeBuilder.cpp`: Copyright 2011 Google Inc.
 - `third_party/skia/src/core/SkFont.cpp`: Copyright 2014 Google Inc.
@@ -116,6 +120,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 - `third_party/skia/src/core/SkScan_AntiPath.cpp`: Copyright 2006 The Android Open Source Project
 - `third_party/skia/src/core/SkStrikeSpec.cpp`: Copyright 2019 The Android Open Source Project
 - `third_party/skia/src/core/SkStroke.cpp`: Copyright 2008 The Android Open Source Project
+- `third_party/skia/src/opts/SkBlitRow_opts.h`: Copyright 2015 Google Inc.
 - `third_party/skia/src/opts/SkRasterPipeline_opts.h`: Copyright 2018 Google Inc.
 - `third_party/skia/src/ports/SkScalerContext_mac_ct.cpp`: Copyright 2006 The Android Open Source Project
 - `third_party/skia/src/shaders/gradients/SkGradientBaseShader.cpp`: Copyright 2022 Google LLC

docs/ports.json

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       ]
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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 2017 The Chromium Authors",
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       "licence": "bsd-chromium",
@@ -2094,6 +2109,21 @@
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       ]
     },
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+      "licence": "bsd-skia",
+      "noticeText": "skia-bsd",
+      "licencePhrase": "Use of this source code is governed by a BSD-style license",
+      "copyright": "Copyright 2006 The Android Open Source Project",
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@@ -2157,6 +2202,21 @@
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       ]
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+      "licence": "bsd-skia",
+      "noticeText": "skia-bsd",
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+      "copyright": "Copyright 2006 The Android Open Source Project",
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@@ -2360,6 +2420,21 @@
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       ]
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+      "licence": "bsd-skia",
+      "noticeText": "skia-bsd",
+      "licencePhrase": "Use of this source code is governed by a BSD-style license",
+      "copyright": "Copyright 2015 Google Inc.",
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