[gn build] Port 1229245

Author: llvmgnsyncbot

llvm/utils/gn/secondary/clang-tools-extra/clangd/unittests/BUILD.gn

@@ -34,6 +34,7 @@ unittest("ClangdTests") {
     "BackgroundIndexTests.cpp",
     "CancellationTests.cpp",
     "CanonicalIncludesTests.cpp",
+    "ClangdLSPServerTests.cpp",
     "ClangdTests.cpp",
     "CodeCompleteTests.cpp",
     "CodeCompletionStringsTests.cpp",
@@ -60,6 +61,7 @@ unittest("ClangdTests") {
     "IndexActionTests.cpp",
     "IndexTests.cpp",
     "JSONTransportTests.cpp",
+    "LSPClient.cpp",
     "ParsedASTTests.cpp",
     "PathMappingTests.cpp",
     "PrintASTTests.cpp",