Add use-chromium-style-naming option to Blink GC plugin.

tools/clang/blink_gc_plugin/tests/traceimpl_error.cpp

Index: tools/clang/blink_gc_plugin/tests/traceimpl_error.cpp
diff --git a/tools/clang/blink_gc_plugin/tests/traceimpl_error.cpp b/tools/clang/blink_gc_plugin/tests/traceimpl_error.cpp
index 041c565e54d45f6651d4c536d09b88f3cfef50f1..c14e52d6dfcc1fee290e0f8bf609b7fd287fc1ea 100644
--- a/tools/clang/blink_gc_plugin/tests/traceimpl_error.cpp
+++ b/tools/clang/blink_gc_plugin/tests/traceimpl_error.cpp
@@ -6,22 +6,22 @@
 
 namespace blink {
 
-void TraceImplExternWithUntracedMember::trace(Visitor* visitor) {
-  traceImpl(visitor);
+void TraceImplExternWithUntracedMember::Trace(Visitor* visitor) {
+  TraceImpl(visitor);
 }
 
 template <typename VisitorDispatcher>
-inline void TraceImplExternWithUntracedMember::traceImpl(
+inline void TraceImplExternWithUntracedMember::TraceImpl(
     VisitorDispatcher visitor) {
   // Should get a warning as well.
 }
 
-void TraceImplExternWithUntracedBase::trace(Visitor* visitor) {
-  traceImpl(visitor);
+void TraceImplExternWithUntracedBase::Trace(Visitor* visitor) {
+  TraceImpl(visitor);
 }
 
 template <typename VisitorDispatcher>
-inline void TraceImplExternWithUntracedBase::traceImpl(
+inline void TraceImplExternWithUntracedBase::TraceImpl(
     VisitorDispatcher visitor) {
   // Ditto.
 }