LevelDBPrefStore

base/prefs/pref_service.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/pref_service.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
@@ skipping 242 matching lines @@
   DCHECK(CalledOnValidThread());
 
   const Preference* pref = FindPreference(path);
   if (!pref) {
     NOTREACHED() << "Trying to get an unregistered pref: " << path;
     return NULL;
   }
 
   // Look for an existing preference in the user store. If it doesn't
   // exist, return NULL.
-  base::Value* value = NULL;
-  if (!user_pref_store_->GetMutableValue(path, &value))
+  const base::Value* value = NULL;
+  if (!user_pref_store_->GetValue(path, &value))
     return NULL;
 
   if (!value->IsType(pref->GetType())) {
     NOTREACHED() << "Pref value type doesn't match registered type.";
     return NULL;
   }
 
   return value;
 }
 
@@ skipping 269 matching lines @@
       DCHECK(found_value->IsType(default_type));
       return found_value;
     } else {
       // Every registered preference has at least a default value.
       NOTREACHED() << "no valid value found for registered pref " << path;
     }
   }
 
   return NULL;
 }