gn build: Merge 99768b2

Author: llvmgnsyncbot

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

@@ -59,6 +59,7 @@ static_library("clangd") {
     "ClangdServer.cpp",
     "CodeComplete.cpp",
     "CodeCompletionStrings.cpp",
+    "CompileCommands.cpp",
     "Compiler.cpp",
     "Context.cpp",
     "Diagnostics.cpp",

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

@@ -38,6 +38,7 @@ unittest("ClangdTests") {
     "CodeCompleteTests.cpp",
     "CodeCompletionStringsTests.cpp",
     "CollectMacrosTests.cpp",
+    "CompileCommandsTests.cpp",
     "ContextTests.cpp",
     "DexTests.cpp",
     "DiagnosticsTests.cpp",