Implement GPUCompilationInfo

Implements the GPUCompilationInfo and GPUCompilationMessage interfaces,
adds the GPUCompilationMessageType enum, and adds the compilationInfo
method to GPUShaderModule.

BUG: dawn:746
Change-Id: Ied70cbbfedbf4890916ec076993714e5042f70e4
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/46600
Commit-Queue: Brandon Jones <bajones@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>

src/dawn_wire/server/ServerShaderModule.cpp

@@ -0,0 +1,51 @@
+// Copyright 2021 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.
+
+#include "dawn_wire/server/Server.h"
+
+#include <memory>
+
+namespace dawn_wire { namespace server {
+
+    bool Server::DoShaderModuleGetCompilationInfo(ObjectId shaderModuleId, uint64_t requestSerial) {
+        auto* shaderModule = ShaderModuleObjects().Get(shaderModuleId);
+        if (shaderModule == nullptr) {
+            return false;
+        }
+
+        auto userdata = MakeUserdata<ShaderModuleGetCompilationInfoUserdata>();
+        userdata->shaderModule = ObjectHandle{shaderModuleId, shaderModule->generation};
+        userdata->requestSerial = requestSerial;
+
+        mProcs.shaderModuleGetCompilationInfo(
+            shaderModule->handle,
+            ForwardToServer<decltype(&Server::OnShaderModuleGetCompilationInfo)>::Func<
+                &Server::OnShaderModuleGetCompilationInfo>(),
+            userdata.release());
+        return true;
+    }
+
+    void Server::OnShaderModuleGetCompilationInfo(WGPUCompilationInfoRequestStatus status,
+                                                  const WGPUCompilationInfo* info,
+                                                  ShaderModuleGetCompilationInfoUserdata* data) {
+        ReturnShaderModuleGetCompilationInfoCallbackCmd cmd;
+        cmd.shaderModule = data->shaderModule;
+        cmd.requestSerial = data->requestSerial;
+        cmd.status = status;
+        cmd.info = info;
+
+        SerializeCommand(cmd);
+    }
+
+}}  // namespace dawn_wire::server