Whitelist QuadF from ChromeClassTester checks

tools/clang/plugins/ChromeClassTester.cpp

Index: tools/clang/plugins/ChromeClassTester.cpp
diff --git a/tools/clang/plugins/ChromeClassTester.cpp b/tools/clang/plugins/ChromeClassTester.cpp
index 8fe61ad3879dc92a6a3a4c7c9f45d9137c1e4ed0..f23f6e2c7a38f684d169bbb9d2d128896c7bf9ae 100644
--- a/tools/clang/plugins/ChromeClassTester.cpp
+++ b/tools/clang/plugins/ChromeClassTester.cpp
@@ -200,6 +200,10 @@ void ChromeClassTester::BuildBannedLists() {
   // Part of our public interface that nacl and friends use. (Arguably, this
   // should mean that this is a higher priority but fixing this looks hard.)
   ignored_record_names_.insert("PluginVersionInfo");
+
+  // Measured performance improvement on cc_perftests. See
+  // https://codereview.chromium.org/11299290/
+  ignored_record_names_.insert("QuadF");
 }
 
 std::string ChromeClassTester::GetNamespaceImpl(const DeclContext* context,