Update some uses of Value in chrome/browser to use the base:: namespace.

chrome/browser/content_settings/content_settings_custom_extension_provider.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 "chrome/browser/content_settings/content_settings_custom_extension_provider.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/content_settings/content_settings_utils.h"
 #include "chrome/browser/extensions/api/content_settings/content_settings_store.h"
 #include "chrome/common/content_settings_pattern.h"
@@ skipping 18 matching lines @@
   return extensions_settings_->GetRuleIterator(content_type,
                                                resource_identifier,
                                                incognito);
 }
 
 bool CustomExtensionProvider::SetWebsiteSetting(
     const ContentSettingsPattern& primary_pattern,
     const ContentSettingsPattern& secondary_pattern,
     ContentSettingsType content_type,
     const ResourceIdentifier& resource_identifier,
-    Value* value) {
+    base::Value* value) {
   return false;
 }
 
 void CustomExtensionProvider::ShutdownOnUIThread() {
   RemoveAllObservers();
   extensions_settings_->RemoveObserver(this);
 }
 
 void CustomExtensionProvider::OnContentSettingChanged(
     const std::string& extension_id,
     bool incognito) {
   if (incognito_ != incognito)
     return;
   // TODO(markusheintz): Be more concise.
   NotifyObservers(ContentSettingsPattern(),
                   ContentSettingsPattern(),
                   CONTENT_SETTINGS_TYPE_DEFAULT,
                   std::string());
 }
 
 }  // namespace content_settings