Fix race condition with windowless plugin buffers. The problem, which is already fixed for Mac, is …

webkit/plugins/npapi/test/plugin_test.h

 // Copyright (c) 2011 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.
 
 #ifndef WEBKIT_PLUGINS_NPAPI_TEST_PLUGIN_TEST_H_
 #define WEBKIT_PLUGINS_NPAPI_TEST_PLUGIN_TEST_H_
 
 #include <string>
 
 #include "third_party/npapi/bindings/npapi.h"
@@ skipping 46 matching lines @@
                                   const std::string &val2);
 
   // Expect two values to not be equal, and if they are
   // logs an appropriate error about it.
   void ExpectAsciiStringNotEqual(const char *val1, const char *val2);
 
   // Expect two integer values are equal, and if not, logs an
   // appropriate error about it.
   void ExpectIntegerEqual(int val1, int val2);
 
- protected:
   // Signals to the Test that invoked us that the test is
   // completed.  This is done by forcing the plugin to
   // set a cookie in the browser window, which the test program
   // is waiting for.  Note - because this is done by
   // using javascript, the browser must have the frame
   // setup before the plugin calls this function.  So plugin
   // tests MUST NOT call this function prior to having
   // received the SetWindow() callback from the browser.
   void SignalTestCompleted();
 
+ protected:
   // Helper function to lookup names in the input array.
   // If the name is found, returns the value, otherwise
   // returns NULL.
   const char *GetArgValue(const char *name, const int16 argc,
                           const char *argn[], const char *argv[]);
 
   // Access to the list of functions provided
   // by the NPAPI host.
   NPNetscapeFuncs *HostFunctions() { return host_functions_; }
 
   // The NPP Identifier for this plugin instance.
   NPP id() { return id_; }
   std::string test_id() const { return test_id_; }
   std::string test_name() const { return test_name_; }
   bool test_completed() const { return test_completed_; }
  private:
   NPP                       id_;
   NPNetscapeFuncs *         host_functions_;
   std::string               test_name_;
   std::string               test_id_;
   std::string               test_status_;
   bool                      test_completed_;
 };
 
 }  // namespace NPAPIClient
 
 #endif  // WEBKIT_PLUGINS_NPAPI_TEST_PLUGIN_TEST_H_