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

tools/clang/blink_gc_plugin/tests/garbage_collected_mixin.h

Index: tools/clang/blink_gc_plugin/tests/garbage_collected_mixin.h
diff --git a/tools/clang/blink_gc_plugin/tests/garbage_collected_mixin.h b/tools/clang/blink_gc_plugin/tests/garbage_collected_mixin.h
index 3c6f86869752c181f54893957ff7a2f59e1f8a71..3136f317b292bd92a4126c04f4e4c15ed0ce5a17 100644
--- a/tools/clang/blink_gc_plugin/tests/garbage_collected_mixin.h
+++ b/tools/clang/blink_gc_plugin/tests/garbage_collected_mixin.h
@@ -11,7 +11,7 @@ namespace blink {
 
 class Mixin : public GarbageCollectedMixin {
 public:
-    virtual void trace(Visitor*) override;
+    virtual void Trace(Visitor*) override;
 private:
     Member<Mixin> m_self;
 };
@@ -19,7 +19,7 @@ private:
 class HeapObject : public GarbageCollected<HeapObject>, public Mixin {
     USING_GARBAGE_COLLECTED_MIXIN(HeapObject);
 public:
-    virtual void trace(Visitor*) override;
+    virtual void Trace(Visitor*) override;
 private:
     Member<Mixin> m_mix;
 };