Revert 239759 "The comment in base64.h implies that base::Base64..."

trunk/src/chrome/browser/extensions/api/developer_private/developer_private_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.
 
 #include "chrome/browser/extensions/api/developer_private/developer_private_api.h"
 
 #include "apps/app_load_service.h"
 #include "apps/app_restore_service.h"
 #include "apps/saved_files_service.h"
 #include "apps/shell_window.h"
@@ skipping 70 matching lines @@
 
 const base::FilePath::CharType kUnpackedAppsFolder[]
     = FILE_PATH_LITERAL("apps_target");
 
 ExtensionUpdater* GetExtensionUpdater(Profile* profile) {
     return profile->GetExtensionService()->updater();
 }
 
 GURL GetImageURLFromData(std::string contents) {
   std::string contents_base64;
-  base::Base64Encode(contents, &contents_base64);
+  if (!base::Base64Encode(contents, &contents_base64))
+    return GURL();
 
   // TODO(dvh): make use of chrome::kDataScheme. Filed as crbug/297301.
   const char kDataURLPrefix[] = "data:image;base64,";
   return GURL(kDataURLPrefix + contents_base64);
 }
 
 GURL GetDefaultImageURL(developer_private::ItemType type) {
   int icon_resource_id;
   switch (type) {
     case developer::ITEM_TYPE_LEGACY_PACKAGED_APP:
@@ skipping 1238 matching lines @@
   return true;
 }
 
 DeveloperPrivateIsProfileManagedFunction::
     ~DeveloperPrivateIsProfileManagedFunction() {
 }
 
 } // namespace api
 
 } // namespace extensions