Convert WriteData...() to use the new user pointer handling (see r285350).

mojo/system/core_test_base.cc

 // Copyright 2013 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 "mojo/system/core_test_base.h"
 
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
@@ skipping 66 matching lines @@
       if (dispatchers) {
         // Okay to leave an invalid dispatcher.
         dispatchers->resize(1);
       }
     }
 
     return MOJO_RESULT_OK;
   }
 
   virtual MojoResult WriteDataImplNoLock(
-      const void* /*elements*/,
-      uint32_t* /*num_bytes*/,
+      UserPointer<const void> /*elements*/,
+      UserPointer<uint32_t> /*num_bytes*/,
       MojoWriteDataFlags /*flags*/) OVERRIDE {
     info_->IncrementWriteDataCallCount();
     lock().AssertAcquired();
     return MOJO_RESULT_UNIMPLEMENTED;
   }
 
   virtual MojoResult BeginWriteDataImplNoLock(
       UserPointer<void*> /*buffer*/,
       UserPointer<uint32_t> /*buffer_num_bytes*/,
       MojoWriteDataFlags /*flags*/) OVERRIDE {
@@ skipping 244 matching lines @@
 }
 
 void CoreTestBase_MockHandleInfo::IncrementCancelAllWaitersCallCount() {
   base::AutoLock locker(lock_);
   cancel_all_waiters_call_count_++;
 }
 
 }  // namespace test
 }  // namespace system
 }  // namespace mojo