BlinkGCPlugin: Support overloaded trace() call from template.

tools/clang/blink_gc_plugin/Config.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file defines the names used by GC infrastructure.
 
 // TODO: Restructure the name determination to use fully qualified names (ala,
 // blink::Foo) so that the plugin can be enabled for all of chromium. Doing so
 // would allow us to catch errors with structures outside of blink that might
 // have unsafe pointers to GC allocated blink structures.
@@ skipping 10 matching lines @@
 const char kCreateName[] = "create";
 const char kTraceName[] = "trace";
 const char kTraceImplName[] = "traceImpl";
 const char kFinalizeName[] = "finalizeGarbageCollectedObject";
 const char kTraceAfterDispatchName[] = "traceAfterDispatch";
 const char kTraceAfterDispatchImplName[] = "traceAfterDispatchImpl";
 const char kRegisterWeakMembersName[] = "registerWeakMembers";
 const char kHeapAllocatorName[] = "HeapAllocator";
 const char kTraceIfNeededName[] = "TraceIfNeeded";
 const char kVisitorDispatcherName[] = "VisitorDispatcher";
+const char kVisitorVarName[] = "visitor";
 const char kAdjustAndMarkName[] = "adjustAndMark";
 const char kIsHeapObjectAliveName[] = "isHeapObjectAlive";
 
 class Config {
  public:
   static bool IsMember(const std::string& name) {
     return name == "Member";
   }
 
   static bool IsWeakMember(const std::string& name) {
@@ skipping 217 matching lines @@
   }
 
   static bool EndsWith(const std::string& str, const std::string& suffix) {
     if (suffix.size() > str.size())
       return false;
     return str.compare(str.size() - suffix.size(), suffix.size(), suffix) == 0;
   }
 };
 
 #endif  // TOOLS_BLINK_GC_PLUGIN_CONFIG_H_