Introduce unregisterProtocolHandler() and isProtocolHandlerRegistered() webview API

public/web/WebNavigatorContentUtilsClient.h

 /*
- * Copyright (C) 2011 Google Inc. All rights reserved.
+ * Copyright (C) 2014, Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef WebPageVisibilityState_h
-#define WebPageVisibilityState_h
+#ifndef WebNavigatorContentUtilsClient_h
+#define WebNavigatorContentUtilsClient_h
 
 namespace blink {
 
-// The following enum should be consistent with the PageVisibilityState enum
+// The following enum should be consistent with the CustomHandlersState enum
 // defined in WebCore.
-enum WebPageVisibilityState {
-    WebPageVisibilityStateVisible,
-    WebPageVisibilityStateHidden,
-    WebPageVisibilityStatePrerender,
+enum WebCustomHandlersState {
+    WebCustomHandlersNew,
+    WebCustomHandlersRegistered,
+    WebCustomHandlersDeclined
 };
 
 } // namespace blink
 
 #endif