<webview>: Navigate to about:blank if attempting to navigate to bad URL

extensions/browser/guest_view/web_view/web_view_constants.cc

 // Copyright 2014 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 "extensions/browser/guest_view/web_view/web_view_constants.h"
 
 namespace webview {
 
 // Attributes.
 const char kAttributeAllowTransparency[] = "allowtransparency";
@@ skipping 87 matching lines @@
 const char kFindRectLeft[] = "left";
 const char kFindRectTop[] = "top";
 const char kFindRectWidth[] = "width";
 const char kFindRectHeight[] = "height";
 const char kFindCanceled[] = "canceled";
 
 // Initialization parameters.
 const char kParameterUserAgentOverride[] = "userAgentOverride";
 
 // Miscellaneous.
+const char kAboutBlankURL[] = "about:blank";
 const char kMenuItemCommandId[] = "commandId";
 const char kMenuItemLabel[] = "label";
 const char kPersistPrefix[] = "persist:";
 const char kStoragePartitionId[] = "partition";
 const unsigned int kMaxOutstandingPermissionRequests = 1024;
 const int kInvalidPermissionRequestID = 0;
 
 }  // namespace webview