[gn build] Port d5c8303

Author: llvmgnsyncbot

llvm/utils/gn/secondary/lldb/source/Plugins/Language/CPlusPlus/BUILD.gn

@@ -63,6 +63,7 @@ static_library("CPlusPlus") {
     "MSVCUndecoratedNameParser.cpp",
     "MsvcStl.cpp",
     "MsvcStlAtomic.cpp",
+    "MsvcStlDeque.cpp",
     "MsvcStlSmartPointer.cpp",
     "MsvcStlTree.cpp",
     "MsvcStlTuple.cpp",