Improvements to uses of base::SmallMap

tools/gn/value.h

 // Copyright (c) 2013 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.
 
 #ifndef TOOLS_GN_VALUE_H_
 #define TOOLS_GN_VALUE_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 102 matching lines @@
   // false and sets the error.
   bool VerifyTypeIs(Type t, Err* err) const;
 
   // Compares values. Only the "value" is compared, not the origin.
   bool operator==(const Value& other) const;
   bool operator!=(const Value& other) const;
 
  private:
   // This are a lot of objects associated with every Value that need
   // initialization and tear down every time. It might be more efficient to
-  // create a union of ManualConstructor objects (see SmallMap) and only
+  // create a union of ManualConstructor objects (see small_map) and only
   // use the one we care about.
   Type type_;
   std::string string_value_;
   bool boolean_value_;
   int64_t int_value_;
   std::vector<Value> list_value_;
   std::unique_ptr<Scope> scope_value_;
 
   const ParseNode* origin_;
 };
 
 #endif  // TOOLS_GN_VALUE_H_