Remove {ast,sem}::Struct::IsBlockDecorated()

No code should rely on the presence of the block attribute, which will
soon be deprecated and removed.

Bug: tint:1324
Change-Id: I868d5e795e66a93bdf99b94389c07dec98cb0ec2
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/72084
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>

src/ast/struct.cc

@@ -44,10 +44,6 @@ Struct::Struct(Struct&&) = default;
 
 Struct::~Struct() = default;
 
-bool Struct::IsBlockDecorated() const {
-  return HasDecoration<StructBlockDecoration>(decorations);
-}
-
 const Struct* Struct::Clone(CloneContext* ctx) const {
   // Clone arguments outside of create() call to have deterministic ordering
   auto src = ctx->Clone(source);

src/ast/struct.h

@@ -44,9 +44,6 @@ class Struct : public Castable<Struct, TypeDecl> {
 
   ~Struct() override;
 
-  /// @returns true if the struct is block decorated
-  bool IsBlockDecorated() const;
-
   /// Clones this node and all transitive child nodes using the `CloneContext`
   /// `ctx`.
   /// @param ctx the clone context

src/inspector/inspector.cc

@@ -318,7 +318,7 @@ uint32_t Inspector::GetStorageSize(const std::string& entry_point) {
   auto* func_sem = program_->Sem().Get(func);
   for (auto& ruv : func_sem->TransitivelyReferencedUniformVariables()) {
     const sem::Struct* s = ruv.first->Type()->UnwrapRef()->As<sem::Struct>();
-    if (s && s->IsBlockDecorated()) {
+    if (s) {
       size += s->Size();
     }
   }
@@ -382,10 +382,6 @@ std::vector<ResourceBinding> Inspector::GetUniformBufferResourceBindings(
       continue;
     }
 
-    if (!str->IsBlockDecorated()) {
-      continue;
-    }
-
     ResourceBinding entry;
     entry.resource_type = ResourceBinding::ResourceType::kUniformBuffer;
     entry.bind_group = binding_info.group->value;

src/reader/wgsl/parser_impl_global_decl_test.cc

@@ -182,7 +182,6 @@ TEST_F(ParserImplTest, GlobalDecl_Struct_WithStride) {
   auto* str = t->As<ast::Struct>();
   EXPECT_EQ(str->name, program.Symbols().Get("A"));
   EXPECT_EQ(str->members.size(), 1u);
-  EXPECT_FALSE(str->IsBlockDecorated());
 
   const auto* ty = str->members[0]->type;
   ASSERT_TRUE(ty->Is<ast::Array>());
@@ -209,7 +208,6 @@ TEST_F(ParserImplTest, GlobalDecl_Struct_WithDecoration) {
   auto* str = t->As<ast::Struct>();
   EXPECT_EQ(str->name, program.Symbols().Get("A"));
   EXPECT_EQ(str->members.size(), 1u);
-  EXPECT_TRUE(str->IsBlockDecorated());
 }
 
 TEST_F(ParserImplTest, GlobalDecl_Struct_Invalid) {

src/sem/struct.h

@@ -142,9 +142,6 @@ class Struct : public Castable<Struct, Type> {
     return pipeline_stage_uses_;
   }
 
-  /// @returns true if the struct has a block decoration
-  bool IsBlockDecorated() const { return declaration_->IsBlockDecorated(); }
-
   /// @returns the name for the type
   std::string type_name() const override;