<webview> Implement clear http cache API.

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 99 matching lines @@
 const char kParameterUserAgentOverride[] = "userAgentOverride";
 
 // Miscellaneous.
 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;
 
+// ClearData API constants.
+const uint32 WEB_VIEW_REMOVE_DATA_MASK_APPCACHE = 1 << 0;
+const uint32 WEB_VIEW_REMOVE_DATA_MASK_CACHE = 1 << 1;
+const uint32 WEB_VIEW_REMOVE_DATA_MASK_COOKIES = 1 << 2;
+const uint32 WEB_VIEW_REMOVE_DATA_MASK_FILE_SYSTEMS = 1 << 3;
+const uint32 WEB_VIEW_REMOVE_DATA_MASK_INDEXEDDB = 1 << 4;
+const uint32 WEB_VIEW_REMOVE_DATA_MASK_LOCAL_STORAGE = 1 << 5;
+const uint32 WEB_VIEW_REMOVE_DATA_MASK_WEBSQL = 1 << 6;
+
 }  // namespace webview