Move webcursors code from webkit/ to content.

content/common/cursors/webcursor_null.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 "webkit/common/cursors/webcursor.h"
+#include "content/common/cursors/webcursor.h"
+
+namespace content {
 
 const ui::PlatformCursor WebCursor::GetPlatformCursor() {
   return NULL;
 }
 
 void WebCursor::SetDisplayInfo(const gfx::Display& display) {
   return;
 }
 
 void WebCursor::InitPlatformData() {
 }
 
 bool WebCursor::SerializePlatformData(Pickle* pickle) const {
   return true;
 }
 
 bool WebCursor::DeserializePlatformData(PickleIterator* iter) {
   return true;
 }
 
 bool WebCursor::IsPlatformDataEqual(const WebCursor& other) const {
   return true;
 }
 
 void WebCursor::CleanupPlatformData() {
 }
 
 void WebCursor::CopyPlatformData(const WebCursor& other) {
 }
+
+}  // namespace content