Revert of Treat std::atomic_int as a trivial class member when checking for non-trivial classes.

tools/clang/plugins/FindBadConstructsConsumer.cpp

Index: tools/clang/plugins/FindBadConstructsConsumer.cpp
diff --git a/tools/clang/plugins/FindBadConstructsConsumer.cpp b/tools/clang/plugins/FindBadConstructsConsumer.cpp
index 3c12e9f50c77668ee862b6d27e778064c39eab45..00d4cb9a2316e42dbffd147d21ce93e418c0b867 100644
--- a/tools/clang/plugins/FindBadConstructsConsumer.cpp
+++ b/tools/clang/plugins/FindBadConstructsConsumer.cpp
@@ -653,14 +653,10 @@
 
       // HACK: I'm at a loss about how to get the syntax checker to get
       // whether a template is externed or not. For the first pass here,
-      // just do simple string comparisons.
-      //
-      // The check for "atomic_int" is a quick hack; The real fix will be to
-      // check the class after template instantiation. TODO(dcheng): Do the real
-      // fix. https://bugs.chromium.org/p/chromium/issues/detail?id=663463
+      // just do retarded string comparisons.
       if (TemplateDecl* decl = name.getAsTemplateDecl()) {
         std::string base_name = decl->getNameAsString();
-        if (base_name == "basic_string" || base_name == "atomic_int")
+        if (base_name == "basic_string")
           whitelisted_template = true;
       }