Move Pickle to base namespace.

content/common/cursors/webcursor_mac.mm

 // 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 "content/common/cursors/webcursor.h"
 
 #import <AppKit/AppKit.h>
 
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
@@ skipping 347 matching lines @@
     }
   }
 
   InitFromCursorInfo(cursor_info);
 }
 
 void WebCursor::InitPlatformData() {
   return;
 }
 
-bool WebCursor::SerializePlatformData(Pickle* pickle) const {
+bool WebCursor::SerializePlatformData(base::Pickle* pickle) const {
   return true;
 }
 
-bool WebCursor::DeserializePlatformData(PickleIterator* iter) {
+bool WebCursor::DeserializePlatformData(base::PickleIterator* iter) {
   return true;
 }
 
 bool WebCursor::IsPlatformDataEqual(const WebCursor& other) const {
   return true;
 }
 
 void WebCursor::CleanupPlatformData() {
   return;
 }
 
 void WebCursor::CopyPlatformData(const WebCursor& other) {
   return;
 }
 
 }  // namespace content