Convert verification of options structs to use the new user pointer handling (see r285350).

mojo/system/shared_buffer_dispatcher.h

 // Copyright 2014 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 MOJO_SYSTEM_SHARED_BUFFER_DISPATCHER_H_
 #define MOJO_SYSTEM_SHARED_BUFFER_DISPATCHER_H_
 
 #include "base/macros.h"
+#include "mojo/system/memory.h"
 #include "mojo/system/raw_shared_buffer.h"
 #include "mojo/system/simple_dispatcher.h"
 #include "mojo/system/system_impl_export.h"
 
 namespace mojo {
 namespace system {
 
 // TODO(vtl): We derive from SimpleDispatcher, even though we don't currently
 // have anything that's waitable. I want to add a "transferrable" wait flag.
 class MOJO_SYSTEM_IMPL_EXPORT SharedBufferDispatcher : public SimpleDispatcher {
  public:
   // The default options to use for |MojoCreateSharedBuffer()|. (Real uses
   // should obtain this via |ValidateCreateOptions()| with a null |in_options|;
   // this is exposed directly for testing convenience.)
   static const MojoCreateSharedBufferOptions kDefaultCreateOptions;
 
   // Validates and/or sets default options for |MojoCreateSharedBufferOptions|.
   // If non-null, |in_options| must point to a struct of at least
   // |in_options->struct_size| bytes. |out_options| must point to a (current)
   // |MojoCreateSharedBufferOptions| and will be entirely overwritten on success
   // (it may be partly overwritten on failure).
   static MojoResult ValidateCreateOptions(
-      const MojoCreateSharedBufferOptions* in_options,
+      UserPointer<const MojoCreateSharedBufferOptions> in_options,
       MojoCreateSharedBufferOptions* out_options);
 
   // Static factory method: |validated_options| must be validated (obviously).
   // On failure, |*result| will be left as-is.
   static MojoResult Create(
       const MojoCreateSharedBufferOptions& validated_options,
       uint64_t num_bytes,
       scoped_refptr<SharedBufferDispatcher>* result);
 
   // |Dispatcher| public methods:
@@ skipping 11 matching lines @@
   explicit SharedBufferDispatcher(
       scoped_refptr<RawSharedBuffer> shared_buffer_);
   virtual ~SharedBufferDispatcher();
 
   // Validates and/or sets default options for
   // |MojoDuplicateBufferHandleOptions|. If non-null, |in_options| must point to
   // a struct of at least |in_options->struct_size| bytes. |out_options| must
   // point to a (current) |MojoDuplicateBufferHandleOptions| and will be
   // entirely overwritten on success (it may be partly overwritten on failure).
   static MojoResult ValidateDuplicateOptions(
-      const MojoDuplicateBufferHandleOptions* in_options,
+      UserPointer<const MojoDuplicateBufferHandleOptions> in_options,
       MojoDuplicateBufferHandleOptions* out_options);
 
   // |Dispatcher| protected methods:
   virtual void CloseImplNoLock() OVERRIDE;
   virtual scoped_refptr<Dispatcher>
       CreateEquivalentDispatcherAndCloseImplNoLock() OVERRIDE;
   virtual MojoResult DuplicateBufferHandleImplNoLock(
-      const MojoDuplicateBufferHandleOptions* options,
+      UserPointer<const MojoDuplicateBufferHandleOptions> options,
       scoped_refptr<Dispatcher>* new_dispatcher) OVERRIDE;
   virtual MojoResult MapBufferImplNoLock(
       uint64_t offset,
       uint64_t num_bytes,
       MojoMapBufferFlags flags,
       scoped_ptr<RawSharedBufferMapping>* mapping) OVERRIDE;
   virtual void StartSerializeImplNoLock(Channel* channel,
                                         size_t* max_size,
                                         size_t* max_platform_handles) OVERRIDE;
   virtual bool EndSerializeAndCloseImplNoLock(
       Channel* channel,
       void* destination,
       size_t* actual_size,
       embedder::PlatformHandleVector* platform_handles) OVERRIDE;
 
   // |SimpleDispatcher| method:
   virtual HandleSignalsState GetHandleSignalsStateNoLock() const OVERRIDE;
 
   scoped_refptr<RawSharedBuffer> shared_buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(SharedBufferDispatcher);
 };
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_SYSTEM_SHARED_BUFFER_DISPATCHER_H_