Blink GC plugin: remove temporary exceptions for the TreeShared/Node hierarchy.

tools/clang/blink_gc_plugin/RecordInfo.cpp

 // 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.
 
 #include "Config.h"
 #include "RecordInfo.h"
 
 using namespace clang;
 using std::string;
 
@@ skipping 97 matching lines @@
        it != base_paths_->end();
        ++it) {
     const CXXBasePathElement& elem = (*it)[it->size() - 1];
     CXXRecordDecl* base = elem.Base->getType()->getAsCXXRecordDecl();
     if (Config::IsGCFinalizedBase(base->getName()))
       return true;
   }
   return false;
 }
 
-bool RecordInfo::IsTreeShared() {
-  if (Config::IsTreeSharedBase(name_))
-    return true;
-  if (!IsGCDerived())
-    return false;
-  for (CXXBasePaths::paths_iterator it = base_paths_->begin();
-       it != base_paths_->end();
-       ++it) {
-    // TreeShared is an immediate base of GCFinalized.
-    if (it->size() < 2) continue;
-    const CXXBasePathElement& elem = (*it)[it->size() - 2];
-    CXXRecordDecl* base = elem.Base->getType()->getAsCXXRecordDecl();
-    if (Config::IsTreeSharedBase(base->getName()))
-      return true;
-  }
-  return false;
-}
-
 // A GC mixin is a class that inherits from a GC mixin base and has
 // not yet been "mixed in" with another GC base class.
 bool RecordInfo::IsGCMixin() {
   if (!IsGCDerived() || base_paths_->begin() == base_paths_->end())
     return false;
   for (CXXBasePaths::paths_iterator it = base_paths_->begin();
        it != base_paths_->end();
        ++it) {
       // Get the last element of the path.
       const CXXBasePathElement& elem = (*it)[it->size() - 1];
@@ skipping 378 matching lines @@
         edge->members().push_back(member);
       }
       // TODO: Handle the case where we fail to create an edge (eg, if the
       // argument is a primitive type or just not fully known yet).
     }
     return edge;
   }
 
   return new Value(info);
 }