fuchsia: Delete all the legacy code! (flutter#26422)

BUILD.gn

@@ -23,14 +23,6 @@ config("config") {
 
   defines = []
 
-  # This define is transitional and will be removed after the embedder API
-  # transition is complete.
-  #
-  # TODO(bugs.fuchsia.dev/54041): Remove when no longer necessary.
-  if (is_fuchsia && flutter_enable_legacy_fuchsia_embedder) {
-    defines += [ "LEGACY_FUCHSIA_EMBEDDER" ]
-  }
-
   if (is_debug) {
     defines += [ "FLUTTER_ENABLE_DIFF_CONTEXT" ]
   }

ci/licenses_golden/licenses_flutter

@@ -52,8 +52,6 @@ FILE: ../../../flutter/flow/layers/backdrop_filter_layer.cc
 FILE: ../../../flutter/flow/layers/backdrop_filter_layer.h
 FILE: ../../../flutter/flow/layers/backdrop_filter_layer_unittests.cc
 FILE: ../../../flutter/flow/layers/checkerboard_layertree_unittests.cc
-FILE: ../../../flutter/flow/layers/child_scene_layer.cc
-FILE: ../../../flutter/flow/layers/child_scene_layer.h
 FILE: ../../../flutter/flow/layers/clip_path_layer.cc
 FILE: ../../../flutter/flow/layers/clip_path_layer.h
 FILE: ../../../flutter/flow/layers/clip_path_layer_unittests.cc
@@ -69,7 +67,6 @@ FILE: ../../../flutter/flow/layers/color_filter_layer_unittests.cc
 FILE: ../../../flutter/flow/layers/container_layer.cc
 FILE: ../../../flutter/flow/layers/container_layer.h
 FILE: ../../../flutter/flow/layers/container_layer_unittests.cc
-FILE: ../../../flutter/flow/layers/fuchsia_layer_unittests.cc
 FILE: ../../../flutter/flow/layers/image_filter_layer.cc
 FILE: ../../../flutter/flow/layers/image_filter_layer.h
 FILE: ../../../flutter/flow/layers/image_filter_layer_unittests.cc
@@ -118,8 +115,6 @@ FILE: ../../../flutter/flow/raster_cache_unittests.cc
 FILE: ../../../flutter/flow/rtree.cc
 FILE: ../../../flutter/flow/rtree.h
 FILE: ../../../flutter/flow/rtree_unittests.cc
-FILE: ../../../flutter/flow/scene_update_context.cc
-FILE: ../../../flutter/flow/scene_update_context.h
 FILE: ../../../flutter/flow/skia_gpu_object.cc
 FILE: ../../../flutter/flow/skia_gpu_object.h
 FILE: ../../../flutter/flow/skia_gpu_object_unittests.cc
@@ -128,8 +123,6 @@ FILE: ../../../flutter/flow/surface.h
 FILE: ../../../flutter/flow/surface_frame.cc
 FILE: ../../../flutter/flow/surface_frame.h
 FILE: ../../../flutter/flow/texture_unittests.cc
-FILE: ../../../flutter/flow/view_holder.cc
-FILE: ../../../flutter/flow/view_holder.h
 FILE: ../../../flutter/flutter_frontend_server/bin/starter.dart
 FILE: ../../../flutter/flutter_frontend_server/lib/server.dart
 FILE: ../../../flutter/fml/ascii_trie.cc
@@ -316,8 +309,6 @@ FILE: ../../../flutter/lib/ui/compositing/scene.h
 FILE: ../../../flutter/lib/ui/compositing/scene_builder.cc
 FILE: ../../../flutter/lib/ui/compositing/scene_builder.h
 FILE: ../../../flutter/lib/ui/compositing/scene_builder_unittests.cc
-FILE: ../../../flutter/lib/ui/compositing/scene_host.cc
-FILE: ../../../flutter/lib/ui/compositing/scene_host.h
 FILE: ../../../flutter/lib/ui/dart_runtime_hooks.cc
 FILE: ../../../flutter/lib/ui/dart_runtime_hooks.h
 FILE: ../../../flutter/lib/ui/dart_ui.cc
@@ -1340,8 +1331,6 @@ FILE: ../../../flutter/shell/platform/fuchsia/flutter/accessibility_bridge_unitt
 FILE: ../../../flutter/shell/platform/fuchsia/flutter/component.cc
 FILE: ../../../flutter/shell/platform/fuchsia/flutter/component.h
 FILE: ../../../flutter/shell/platform/fuchsia/flutter/component_unittest.cc
-FILE: ../../../flutter/shell/platform/fuchsia/flutter/compositor_context.cc
-FILE: ../../../flutter/shell/platform/fuchsia/flutter/compositor_context.h
 FILE: ../../../flutter/shell/platform/fuchsia/flutter/default_session_connection.cc
 FILE: ../../../flutter/shell/platform/fuchsia/flutter/default_session_connection.h
 FILE: ../../../flutter/shell/platform/fuchsia/flutter/engine.cc

common/config.gni

@@ -19,9 +19,6 @@ declare_args() {
 
   # Whether to use the Skia text shaper module for all text rendering
   flutter_always_use_skshaper = false
-
-  # Whether to use the legacy embedder when building for Fuchsia.
-  flutter_enable_legacy_fuchsia_embedder = true
 }
 
 # feature_defines_list ---------------------------------------------------------

flow/BUILD.gn

@@ -80,24 +80,6 @@ source_set("flow") {
     "//flutter/fml",
     "//third_party/skia",
   ]
-
-  if (is_fuchsia && flutter_enable_legacy_fuchsia_embedder) {
-    sources += [
-      "layers/child_scene_layer.cc",
-      "layers/child_scene_layer.h",
-      "scene_update_context.cc",
-      "scene_update_context.h",
-      "view_holder.cc",
-      "view_holder.h",
-    ]
-
-    public_deps = [
-      "$fuchsia_sdk_root/fidl:fuchsia.ui.app",
-      "$fuchsia_sdk_root/fidl:fuchsia.ui.gfx",
-      "$fuchsia_sdk_root/fidl:fuchsia.ui.views",
-      "$fuchsia_sdk_root/pkg:scenic_cpp",
-    ]
-  }
 }
 
 if (enable_unittests) {
@@ -194,11 +176,5 @@ if (enable_unittests) {
       # Required for M_PI and others.
       defines += [ "_USE_MATH_DEFINES" ]
     }
-
-    if (is_fuchsia && flutter_enable_legacy_fuchsia_embedder) {
-      sources += [ "layers/fuchsia_layer_unittests.cc" ]
-
-      deps += [ "//build/fuchsia/pkg:sys_cpp_testing" ]
-    }
   }
 }

flow/layers/backdrop_filter_layer_unittests.cc

@@ -30,7 +30,6 @@ TEST_F(BackdropFilterLayerTest, PaintingEmptyLayerDies) {
   parent->Preroll(preroll_context(), SkMatrix());
   EXPECT_EQ(layer->paint_bounds(), kEmptyRect);
   EXPECT_FALSE(layer->needs_painting(paint_context()));
-  EXPECT_FALSE(layer->needs_system_composite());
 
   EXPECT_DEATH_IF_SUPPORTED(layer->Paint(paint_context()),
                             "needs_painting\\(context\\)");
@@ -263,7 +262,7 @@ TEST_F(BackdropFilterLayerTest, Readback) {
 
   // BDF with no filter blocks child with readback
   auto mock_layer =
-      std::make_shared<MockLayer>(SkPath(), SkPaint(), false, false, true);
+      std::make_shared<MockLayer>(SkPath(), SkPaint(), false, true);
   layer2->Add(mock_layer);
   preroll_context()->surface_needs_readback = false;
   layer2->Preroll(preroll_context(), initial_transform);

flow/layers/checkerboard_layertree_unittests.cc

@@ -297,12 +297,8 @@ TEST_F(CheckerBoardLayerTest, PhysicalSaveLayerNotCheckBoard) {
             PhysicalShapeLayer::ComputeShadowBounds(layer_path.getBounds(),
                                                     initial_elevation, 1.0f));
   EXPECT_TRUE(layer->needs_painting(paint_context()));
-  EXPECT_FALSE(layer->needs_system_composite());
   EXPECT_EQ(layer->elevation(), initial_elevation);
 
-  // The Fuchsia system compositor handles all elevated PhysicalShapeLayers and
-  // their shadows , so we do not use the direct |Paint()| path there.
-#if !defined(LEGACY_FUCHSIA_EMBEDDER)
   const SkRect paint_bounds = SkRect::MakeXYWH(0, 0, 8, 8);
   const SkPaint clip_paint;
   SkPaint layer_paint;
@@ -323,7 +319,6 @@ TEST_F(CheckerBoardLayerTest, PhysicalSaveLayerNotCheckBoard) {
            MockCanvas::DrawCall{2, MockCanvas::DrawPaint{layer_paint}},
            MockCanvas::DrawCall{2, MockCanvas::RestoreData{1}},
            MockCanvas::DrawCall{1, MockCanvas::RestoreData{0}}}));
-#endif
 }
 
 TEST_F(CheckerBoardLayerTest, PhysicalSaveLayerCheckBoard) {
@@ -341,12 +336,8 @@ TEST_F(CheckerBoardLayerTest, PhysicalSaveLayerCheckBoard) {
             PhysicalShapeLayer::ComputeShadowBounds(layer_path.getBounds(),
                                                     initial_elevation, 1.0f));
   EXPECT_TRUE(layer->needs_painting(paint_context()));
-  EXPECT_FALSE(layer->needs_system_composite());
   EXPECT_EQ(layer->elevation(), initial_elevation);
 
-  // The Fuchsia system compositor handles all elevated PhysicalShapeLayers and
-  // their shadows , so we do not use the direct |Paint()| path there.
-#if !defined(LEGACY_FUCHSIA_EMBEDDER)
   const SkRect paint_bounds = SkRect::MakeXYWH(0, 0, 8, 8);
   const SkPaint clip_paint;
   SkPaint layer_paint;
@@ -367,7 +358,6 @@ TEST_F(CheckerBoardLayerTest, PhysicalSaveLayerCheckBoard) {
            MockCanvas::DrawCall{2, MockCanvas::DrawPaint{layer_paint}},
            MockCanvas::DrawCall{2, MockCanvas::RestoreData{1}},
            MockCanvas::DrawCall{1, MockCanvas::RestoreData{0}}}));
-#endif
 }
 
 #endif

flow/layers/clip_path_layer.cc

@@ -5,10 +5,6 @@
 #include "flutter/flow/layers/clip_path_layer.h"
 #include "flutter/flow/paint_utils.h"
 
-#if defined(LEGACY_FUCHSIA_EMBEDDER)
-#include "lib/ui/scenic/cpp/commands.h"
-#endif
-
 namespace flutter {
 
 ClipPathLayer::ClipPathLayer(const SkPath& clip_path, Clip clip_behavior)
@@ -58,19 +54,6 @@ void ClipPathLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
   context->cull_rect = previous_cull_rect;
 }
 
-#if defined(LEGACY_FUCHSIA_EMBEDDER)
-
-void ClipPathLayer::UpdateScene(std::shared_ptr<SceneUpdateContext> context) {
-  TRACE_EVENT0("flutter", "ClipPathLayer::UpdateScene");
-  FML_DCHECK(needs_system_composite());
-
-  // TODO(liyuqian): respect clip_behavior_
-  SceneUpdateContext::Clip clip(context, clip_path_.getBounds());
-  UpdateSceneChildren(context);
-}
-
-#endif
-
 void ClipPathLayer::Paint(PaintContext& context) const {
   TRACE_EVENT0("flutter", "ClipPathLayer::Paint");
   FML_DCHECK(needs_painting(context));

flow/layers/clip_path_layer.h

@@ -27,10 +27,6 @@ class ClipPathLayer : public ContainerLayer {
     return clip_behavior_ == Clip::antiAliasWithSaveLayer;
   }
 
-#if defined(LEGACY_FUCHSIA_EMBEDDER)
-  void UpdateScene(std::shared_ptr<SceneUpdateContext> context) override;
-#endif
-
  private:
   SkPath clip_path_;
   Clip clip_behavior_;

flow/layers/clip_path_layer_unittests.cc

@@ -222,7 +222,7 @@ TEST_F(ClipPathLayerTest, Readback) {
   const Clip save_layer = Clip::antiAliasWithSaveLayer;
 
   std::shared_ptr<MockLayer> nochild;
-  auto reader = std::make_shared<MockLayer>(path, paint, false, false, true);
+  auto reader = std::make_shared<MockLayer>(path, paint, false, true);
   auto nonreader = std::make_shared<MockLayer>(path, paint);
 
   // No children, no prior readback -> no readback after

flow/layers/clip_rect_layer.cc

@@ -53,19 +53,6 @@ void ClipRectLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
   context->cull_rect = previous_cull_rect;
 }
 
-#if defined(LEGACY_FUCHSIA_EMBEDDER)
-
-void ClipRectLayer::UpdateScene(std::shared_ptr<SceneUpdateContext> context) {
-  TRACE_EVENT0("flutter", "ClipRectLayer::UpdateScene");
-  FML_DCHECK(needs_system_composite());
-
-  // TODO(liyuqian): respect clip_behavior_
-  SceneUpdateContext::Clip clip(context, clip_rect_);
-  UpdateSceneChildren(context);
-}
-
-#endif
-
 void ClipRectLayer::Paint(PaintContext& context) const {
   TRACE_EVENT0("flutter", "ClipRectLayer::Paint");
   FML_DCHECK(needs_painting(context));

flow/layers/clip_rect_layer.h

@@ -26,10 +26,6 @@ class ClipRectLayer : public ContainerLayer {
     return clip_behavior_ == Clip::antiAliasWithSaveLayer;
   }
 
-#if defined(LEGACY_FUCHSIA_EMBEDDER)
-  void UpdateScene(std::shared_ptr<SceneUpdateContext> context) override;
-#endif
-
  private:
   SkRect clip_rect_;
   Clip clip_behavior_;

flow/layers/clip_rect_layer_unittests.cc

@@ -220,7 +220,7 @@ TEST_F(ClipRectLayerTest, Readback) {
   const Clip save_layer = Clip::antiAliasWithSaveLayer;
 
   std::shared_ptr<MockLayer> nochild;
-  auto reader = std::make_shared<MockLayer>(path, paint, false, false, true);
+  auto reader = std::make_shared<MockLayer>(path, paint, false, true);
   auto nonreader = std::make_shared<MockLayer>(path, paint);
 
   // No children, no prior readback -> no readback after

flow/layers/clip_rrect_layer.cc

@@ -54,19 +54,6 @@ void ClipRRectLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
   context->cull_rect = previous_cull_rect;
 }
 
-#if defined(LEGACY_FUCHSIA_EMBEDDER)
-
-void ClipRRectLayer::UpdateScene(std::shared_ptr<SceneUpdateContext> context) {
-  TRACE_EVENT0("flutter", "ClipRRectLayer::UpdateScene");
-  FML_DCHECK(needs_system_composite());
-
-  // TODO(liyuqian): respect clip_behavior_
-  SceneUpdateContext::Clip clip(context, clip_rrect_.getBounds());
-  UpdateSceneChildren(context);
-}
-
-#endif
-
 void ClipRRectLayer::Paint(PaintContext& context) const {
   TRACE_EVENT0("flutter", "ClipRRectLayer::Paint");
   FML_DCHECK(needs_painting(context));

flow/layers/clip_rrect_layer.h

@@ -27,10 +27,6 @@ class ClipRRectLayer : public ContainerLayer {
     return clip_behavior_ == Clip::antiAliasWithSaveLayer;
   }
 
-#if defined(LEGACY_FUCHSIA_EMBEDDER)
-  void UpdateScene(std::shared_ptr<SceneUpdateContext> context) override;
-#endif
-
  private:
   SkRRect clip_rrect_;
   Clip clip_behavior_;

flow/layers/clip_rrect_layer_unittests.cc

@@ -225,7 +225,7 @@ TEST_F(ClipRRectLayerTest, Readback) {
   const Clip save_layer = Clip::antiAliasWithSaveLayer;
 
   std::shared_ptr<MockLayer> nochild;
-  auto reader = std::make_shared<MockLayer>(path, paint, false, false, true);
+  auto reader = std::make_shared<MockLayer>(path, paint, false, true);
   auto nonreader = std::make_shared<MockLayer>(path, paint);
 
   // No children, no prior readback -> no readback after

flow/layers/color_filter_layer_unittests.cc

@@ -23,7 +23,6 @@ TEST_F(ColorFilterLayerTest, PaintingEmptyLayerDies) {
   layer->Preroll(preroll_context(), SkMatrix());
   EXPECT_EQ(layer->paint_bounds(), kEmptyRect);
   EXPECT_FALSE(layer->needs_painting(paint_context()));
-  EXPECT_FALSE(layer->needs_system_composite());
 
   EXPECT_DEATH_IF_SUPPORTED(layer->Paint(paint_context()),
                             "needs_painting\\(context\\)");
@@ -207,7 +206,7 @@ TEST_F(ColorFilterLayerTest, Readback) {
 
   // ColorFilterLayer blocks child with readback
   auto mock_layer =
-      std::make_shared<MockLayer>(SkPath(), SkPaint(), false, false, true);
+      std::make_shared<MockLayer>(SkPath(), SkPaint(), false, true);
   layer->Add(mock_layer);
   preroll_context()->surface_needs_readback = false;
   layer->Preroll(preroll_context(), initial_transform);