[gn build] Port f12e10b

Author: nico

llvm/utils/gn/secondary/llvm/lib/SandboxIR/BUILD.gn

@@ -5,6 +5,7 @@ static_library("SandboxIR") {
     "//llvm/lib/Support",
   ]
   sources = [
+    "Pass.cpp",
     "SandboxIR.cpp",
     "Tracker.cpp",
     "Type.cpp",

llvm/utils/gn/secondary/llvm/unittests/SandboxIR/BUILD.gn

@@ -7,6 +7,7 @@ unittest("SandboxIRTests") {
     "//llvm/lib/SandboxIR",
   ]
   sources = [
+    "PassTest.cpp",
     "SandboxIRTest.cpp",
     "TrackerTest.cpp",
     "TypesTest.cpp",