Revert 3 fuzzing CLs, since they are preventing rolling into Chromium.

Revert "Adding fuzzing for Transforms"

This reverts commit 4a29008c7e.

Revert "Add fuzzers for various emission paths"

This reverts commit 39545b7e7c.

Revert "Create common utility class for fuzzing"

This reverts commit 766e31d507.

Change-Id: Ia4e4ea2a4a5f423ea5bfa8ca9659c4028b558b45
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/37180
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Reviewed-by: dan sinclair <dsinclair@chromium.org>

fuzzers/tint_common_fuzzer.cc

@@ -1,134 +0,0 @@
-// Copyright 2021 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 "fuzzers/tint_common_fuzzer.h"
-
-#include <memory>
-#include <string>
-#include <utility>
-#include <vector>
-
-namespace tint {
-namespace fuzzers {
-
-CommonFuzzer::CommonFuzzer(InputFormat input, OutputFormat output)
-    : input_(input), output_(output) {}
-CommonFuzzer::~CommonFuzzer() = default;
-
-int CommonFuzzer::Run(const uint8_t* data, size_t size) {
-  std::unique_ptr<tint::reader::Reader> parser;
-#if TINT_BUILD_WGSL_READER
-  std::unique_ptr<tint::Source::File> file;
-#endif  // TINT_BUILD_WGSL_READER
-
-  switch (input_) {
-    case InputFormat::kWGSL:
-#if TINT_BUILD_WGSL_READER
-    {
-      std::string str(reinterpret_cast<const char*>(data), size);
-
-      file = std::make_unique<tint::Source::File>("test.wgsl", str);
-      parser = std::make_unique<tint::reader::wgsl::Parser>(file.get());
-    }
-#endif  // TINT_BUILD_WGSL_READER
-    break;
-    case InputFormat::kSpv:
-#if TINT_BUILD_SPV_READER
-    {
-      size_t sizeInU32 = size / sizeof(uint32_t);
-      const uint32_t* u32Data = reinterpret_cast<const uint32_t*>(data);
-      std::vector<uint32_t> input(u32Data, u32Data + sizeInU32);
-
-      if (input.size() != 0) {
-        parser = std::make_unique<tint::reader::spirv::Parser>(input);
-      }
-    }
-#endif  // TINT_BUILD_WGSL_READER
-    break;
-    default:
-      break;
-  }
-
-  if (!parser) {
-    return 0;
-  }
-
-  if (!parser->Parse()) {
-    return 0;
-  }
-
-  if (output_ == OutputFormat::kNone) {
-    return 0;
-  }
-
-  auto mod = parser->module();
-  if (!mod.IsValid()) {
-    return 0;
-  }
-
-  tint::TypeDeterminer td(&mod);
-  if (!td.Determine()) {
-    return 0;
-  }
-
-  tint::Validator v;
-  if (!v.Validate(&mod)) {
-    return 0;
-  }
-
-  if (transform_manager_) {
-    auto out = transform_manager_->Run(&mod);
-    if (out.diagnostics.contains_errors()) {
-      return 0;
-    }
-
-    mod = std::move(out.module);
-  }
-
-  std::unique_ptr<tint::writer::Writer> writer;
-
-  switch (output_) {
-    case OutputFormat::kWGSL:
-#if TINT_BUILD_WGSL_WRITER
-      writer = std::make_unique<tint::writer::wgsl::Generator>(std::move(mod));
-#endif  // TINT_BUILD_WGSL_WRITER
-      break;
-    case OutputFormat::kSpv:
-#if TINT_BUILD_SPV_WRITER
-      writer = std::make_unique<tint::writer::spirv::Generator>(std::move(mod));
-#endif  // TINT_BUILD_SPV_WRITER
-      break;
-    case OutputFormat::kHLSL:
-#if TINT_BUILD_HLSL_WRITER
-      writer = std::make_unique<tint::writer::hlsl::Generator>(std::move(mod));
-#endif  // TINT_BUILD_HLSL_WRITER
-      break;
-    case OutputFormat::kMSL:
-#if TINT_BUILD_MSL_WRITER
-      writer = std::make_unique<tint::writer::msl::Generator>(std::move(mod));
-#endif  // TINT_BUILD_MSL_WRITER
-      break;
-    case OutputFormat::kNone:
-      break;
-  }
-
-  if (writer) {
-    writer->Generate();
-  }
-
-  return 0;
-}
-
-}  // namespace fuzzers
-}  // namespace tint