tint->dawn: Shuffle source tree in preperation of merging repos

docs/    -> docs/tint/
fuzzers/ -> src/tint/fuzzers/
samples/ -> src/tint/cmd/
src/     -> src/tint/
test/    -> test/tint/

BUG=tint:1418,tint:1433

Change-Id: Id2aa79f989aef3245b80ef4aa37a27ff16cd700b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/80482
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>

src/tint/ast/case_statement.cc

@@ -0,0 +1,50 @@
+// Copyright 2020 The Tint Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "src/tint/ast/case_statement.h"
+
+#include "src/tint/program_builder.h"
+
+TINT_INSTANTIATE_TYPEINFO(tint::ast::CaseStatement);
+
+namespace tint {
+namespace ast {
+
+CaseStatement::CaseStatement(ProgramID pid,
+                             const Source& src,
+                             CaseSelectorList s,
+                             const BlockStatement* b)
+    : Base(pid, src), selectors(s), body(b) {
+  TINT_ASSERT(AST, body);
+  TINT_ASSERT_PROGRAM_IDS_EQUAL_IF_VALID(AST, body, program_id);
+  for (auto* selector : selectors) {
+    TINT_ASSERT(AST, selector);
+    TINT_ASSERT_PROGRAM_IDS_EQUAL_IF_VALID(AST, selector, program_id);
+  }
+}
+
+CaseStatement::CaseStatement(CaseStatement&&) = default;
+
+CaseStatement::~CaseStatement() = default;
+
+const CaseStatement* CaseStatement::Clone(CloneContext* ctx) const {
+  // Clone arguments outside of create() call to have deterministic ordering
+  auto src = ctx->Clone(source);
+  auto sel = ctx->Clone(selectors);
+  auto* b = ctx->Clone(body);
+  return ctx->dst->create<CaseStatement>(src, sel, b);
+}
+
+}  // namespace ast
+}  // namespace tint