Add proxies for Tint targets used by Chromium

This will ease rolling Dawn into Chromium, once Tint is merged in

BUG=dawn:1343

Change-Id: I53fa7b82a001ab3351f5366e8e045090c0fdb49b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/85380
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
diff --git a/src/tint/fuzzers/BUILD.gn b/src/tint/fuzzers/BUILD.gn
new file mode 100644
index 0000000..f2291d7
--- /dev/null
+++ b/src/tint/fuzzers/BUILD.gn
@@ -0,0 +1,22 @@
+# Copyright 2022 The Dawn 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.
+
+import("../../../scripts/dawn_overrides_with_defaults.gni")
+
+# Target aliases to ease merging Tint->Dawn
+
+group("fuzzers") {
+  deps = [ "${dawn_tint_dir}/src/tint/fuzzers:fuzzers" ]
+  testonly = true
+}
diff --git a/src/tint/fuzzers/tint_ast_fuzzer/BUILD.gn b/src/tint/fuzzers/tint_ast_fuzzer/BUILD.gn
new file mode 100644
index 0000000..2a312be
--- /dev/null
+++ b/src/tint/fuzzers/tint_ast_fuzzer/BUILD.gn
@@ -0,0 +1,29 @@
+# Copyright 2022 The Dawn Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("../../../../scripts/dawn_overrides_with_defaults.gni")
+
+# Target aliases to ease merging Tint->Dawn
+
+group("tint_ast_fuzzer") {
+  deps = [ "${dawn_tint_dir}/src/tint/fuzzers/tint_ast_fuzzer:tint_ast_fuzzer" ]
+  testonly = true
+}
+
+group("tint_ast_fuzzer_proto") {
+  deps = [
+    "${dawn_tint_dir}/src/tint/fuzzers/tint_ast_fuzzer:tint_ast_fuzzer_proto",
+  ]
+  testonly = true
+}
diff --git a/src/tint/fuzzers/tint_spirv_tools_fuzzer/BUILD.gn b/src/tint/fuzzers/tint_spirv_tools_fuzzer/BUILD.gn
new file mode 100644
index 0000000..a42c2d5
--- /dev/null
+++ b/src/tint/fuzzers/tint_spirv_tools_fuzzer/BUILD.gn
@@ -0,0 +1,22 @@
+# Copyright 2022 The Dawn Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("../../../../scripts/dawn_overrides_with_defaults.gni")
+
+# Target aliases to ease merging Tint->Dawn
+
+group("tint_spirv_tools_fuzzer") {
+  deps = [ "${dawn_tint_dir}/src/tint/fuzzers/tint_spirv_tools_fuzzer:tint_spirv_tools_fuzzer" ]
+  testonly = true
+}
diff --git a/test/tint/BUILD.gn b/test/tint/BUILD.gn
new file mode 100644
index 0000000..70b0940
--- /dev/null
+++ b/test/tint/BUILD.gn
@@ -0,0 +1,22 @@
+# Copyright 2022 The Dawn 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.
+
+import("../../scripts/dawn_overrides_with_defaults.gni")
+
+# Target aliases to ease merging Tint->Dawn
+
+group("tint_unittests") {
+  deps = [ "${dawn_tint_dir}/test/tint:tint_unittests" ]
+  testonly = true
+}