Convert WriteMessage...() 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 29 matching lines @@
     info_->IncrementDtorCallCount();
   }
 
   // |Dispatcher| protected methods:
   virtual void CloseImplNoLock() OVERRIDE {
     info_->IncrementCloseCallCount();
     lock().AssertAcquired();
   }
 
   virtual MojoResult WriteMessageImplNoLock(
-      const void* bytes,
+      UserPointer<const void> bytes,
       uint32_t num_bytes,
       std::vector<DispatcherTransport>* transports,
       MojoWriteMessageFlags /*flags*/) OVERRIDE {
     info_->IncrementWriteMessageCallCount();
     lock().AssertAcquired();
 
-    if (!VerifyUserPointerWithSize<1>(bytes, num_bytes))
-      return MOJO_RESULT_INVALID_ARGUMENT;
     if (num_bytes > kMaxMessageNumBytes)
       return MOJO_RESULT_RESOURCE_EXHAUSTED;
 
     if (transports)
       return MOJO_RESULT_UNIMPLEMENTED;
 
     return MOJO_RESULT_OK;
   }
 
   virtual MojoResult ReadMessageImplNoLock(
@@ skipping 276 matching lines @@
 }
 
 void CoreTestBase_MockHandleInfo::IncrementCancelAllWaitersCallCount() {
   base::AutoLock locker(lock_);
   cancel_all_waiters_call_count_++;
 }
 
 }  // namespace test
 }  // namespace system
 }  // namespace mojo