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

chrome/browser/extensions/api/font_settings/font_settings_api.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.
 
 // Font Settings Extension API implementation.
 
 #include "chrome/browser/extensions/api/font_settings/font_settings_api.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 364 matching lines @@
 
 bool SetFontPrefExtensionFunction::RunImpl() {
   if (GetProfile()->IsOffTheRecord()) {
     error_ = kSetFromIncognitoError;
     return false;
   }
 
   base::DictionaryValue* details = NULL;
   EXTENSION_FUNCTION_VALIDATE(args_->GetDictionary(0, &details));
 
-  Value* value;
+  base::Value* value;
   EXTENSION_FUNCTION_VALIDATE(details->Get(GetKey(), &value));
 
   PreferenceAPI::Get(GetProfile())
       ->SetExtensionControlledPref(extension_id(),
                                    GetPrefName(),
                                    kExtensionPrefsScopeRegular,
                                    value->DeepCopy());
   return true;
 }
 
@@ skipping 51 matching lines @@
 
 const char* FontSettingsSetMinimumFontSizeFunction::GetPrefName() {
   return prefs::kWebKitMinimumFontSize;
 }
 
 const char* FontSettingsSetMinimumFontSizeFunction::GetKey() {
   return kPixelSizeKey;
 }
 
 }  // namespace extensions