Add copy and assignment to FundamentalValue and StringValue.

base/values.cc

 // Copyright (c) 2012 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 "base/values.h"
 
 #include <algorithm>
 #include <ostream>
 
 #include "base/float_util.h"
@@ skipping 156 matching lines @@
   return other->IsType(TYPE_NULL);
 }
 
 // static
 bool Value::Equals(const Value* a, const Value* b) {
   if ((a == NULL) && (b == NULL)) return true;
   if ((a == NULL) ^  (b == NULL)) return false;
   return a->Equals(b);
 }
 
-Value::Value(Type type) : type_(type) {
+Value::Value(Type type) : type_(type) {}
+
+Value::Value(const Value& that) : type_(that.type_) {}
+
+void Value::operator=(const Value& that) {
+  type_ = that.type_;
 }
 
 ///////////////////// FundamentalValue ////////////////////
 
 FundamentalValue::FundamentalValue(bool in_value)
     : Value(TYPE_BOOLEAN), boolean_value_(in_value) {
 }
 
 FundamentalValue::FundamentalValue(int in_value)
     : Value(TYPE_INTEGER), integer_value_(in_value) {
@@ skipping 941 matching lines @@
 
 std::ostream& operator<<(std::ostream& out, const Value& value) {
   std::string json;
   JSONWriter::WriteWithOptions(&value,
                                JSONWriter::OPTIONS_PRETTY_PRINT,
                                &json);
   return out << json;
 }
 
 }  // namespace base