Mojo: Add a platform interface for shared memory (embedder::PlatformSharedBuffer).

mojo/system/dispatcher.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/dispatcher.h"
 
 #include "base/logging.h"
 #include "mojo/system/constants.h"
 #include "mojo/system/message_pipe_dispatcher.h"
 #include "mojo/system/platform_handle_dispatcher.h"
@@ skipping 181 matching lines @@
 MojoResult Dispatcher::DuplicateBufferHandle(
     UserPointer<const MojoDuplicateBufferHandleOptions> options,
     scoped_refptr<Dispatcher>* new_dispatcher) {
   base::AutoLock locker(lock_);
   if (is_closed_)
     return MOJO_RESULT_INVALID_ARGUMENT;
 
   return DuplicateBufferHandleImplNoLock(options, new_dispatcher);
 }
 
-MojoResult Dispatcher::MapBuffer(uint64_t offset,
-                                 uint64_t num_bytes,
-                                 MojoMapBufferFlags flags,
-                                 scoped_ptr<RawSharedBufferMapping>* mapping) {
+MojoResult Dispatcher::MapBuffer(
+    uint64_t offset,
+    uint64_t num_bytes,
+    MojoMapBufferFlags flags,
+    scoped_ptr<embedder::PlatformSharedBufferMapping>* mapping) {
   base::AutoLock locker(lock_);
   if (is_closed_)
     return MOJO_RESULT_INVALID_ARGUMENT;
 
   return MapBufferImplNoLock(offset, num_bytes, flags, mapping);
 }
 
 HandleSignalsState Dispatcher::GetHandleSignalsState() const {
   base::AutoLock locker(lock_);
   if (is_closed_)
@@ skipping 130 matching lines @@
   lock_.AssertAcquired();
   DCHECK(!is_closed_);
   // By default, not supported. Only needed for buffer dispatchers.
   return MOJO_RESULT_INVALID_ARGUMENT;
 }
 
 MojoResult Dispatcher::MapBufferImplNoLock(
     uint64_t /*offset*/,
     uint64_t /*num_bytes*/,
     MojoMapBufferFlags /*flags*/,
-    scoped_ptr<RawSharedBufferMapping>* /*mapping*/) {
+    scoped_ptr<embedder::PlatformSharedBufferMapping>* /*mapping*/) {
   lock_.AssertAcquired();
   DCHECK(!is_closed_);
   // By default, not supported. Only needed for buffer dispatchers.
   return MOJO_RESULT_INVALID_ARGUMENT;
 }
 
 HandleSignalsState Dispatcher::GetHandleSignalsStateImplNoLock() const {
   lock_.AssertAcquired();
   DCHECK(!is_closed_);
   // By default, waiting isn't supported. Only dispatchers that can be waited on
@@ skipping 112 matching lines @@
 // DispatcherTransport ---------------------------------------------------------
 
 void DispatcherTransport::End() {
   DCHECK(dispatcher_);
   dispatcher_->lock_.Release();
   dispatcher_ = NULL;
 }
 
 }  // namespace system
 }  // namespace mojo