Change PrefStore::ReadResult to a boolean.

base/prefs/testing_pref_store.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/prefs/testing_pref_store.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 
 TestingPrefStore::TestingPrefStore()
     : read_only_(true),
       init_complete_(false) {
 }
 
-PrefStore::ReadResult TestingPrefStore::GetValue(const std::string& key,
-                                                 const Value** value) const {
-  return prefs_.GetValue(key, value) ? READ_OK : READ_NO_VALUE;
+bool TestingPrefStore::GetValue(const std::string& key,
+                                const Value** value) const {
+  return prefs_.GetValue(key, value);
 }
 
-PrefStore::ReadResult TestingPrefStore::GetMutableValue(const std::string& key,
-                                                        Value** value) {
-  return prefs_.GetValue(key, value) ? READ_OK : READ_NO_VALUE;
+bool TestingPrefStore::GetMutableValue(const std::string& key,
+                                       Value** value) {
+  return prefs_.GetValue(key, value);
 }
 
 void TestingPrefStore::AddObserver(PrefStore::Observer* observer) {
   observers_.AddObserver(observer);
 }
 
 void TestingPrefStore::RemoveObserver(PrefStore::Observer* observer) {
   observers_.RemoveObserver(observer);
 }
 
@@ skipping 93 matching lines @@
     return false;
 
   return stored_value->GetAsBoolean(value);
 }
 
 void TestingPrefStore::set_read_only(bool read_only) {
   read_only_ = read_only;
 }
 
 TestingPrefStore::~TestingPrefStore() {}