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

tools/clang/blink_gc_plugin/BlinkGCPluginOptions.h

Index: tools/clang/blink_gc_plugin/BlinkGCPluginOptions.h
diff --git a/tools/clang/blink_gc_plugin/BlinkGCPluginOptions.h b/tools/clang/blink_gc_plugin/BlinkGCPluginOptions.h
index b941f0864562fc4d4d088022a7a8c8d8574f6428..baaa2fff6f14b087de46291bfb45075c974bdf9c 100644
--- a/tools/clang/blink_gc_plugin/BlinkGCPluginOptions.h
+++ b/tools/clang/blink_gc_plugin/BlinkGCPluginOptions.h
@@ -10,11 +10,10 @@
 #include <vector>
 
 struct BlinkGCPluginOptions {
-  BlinkGCPluginOptions()
-      : dump_graph(false),
-        warn_unneeded_finalizer(false) {}
-  bool dump_graph;
-  bool warn_unneeded_finalizer;
+  bool dump_graph = false;
+  bool warn_unneeded_finalizer = false;
+  // TODO(https://crbug.com/675879): Clean up after the Blink rename.
+  bool use_chromium_style_naming = false;
   std::set<std::string> ignored_classes;
   std::set<std::string> checked_namespaces;
   std::vector<std::string> ignored_directories;