Mojo C++ bindings: introduce an optional array to store transferred interface IDs in messages.

mojo/public/cpp/bindings/lib/serialization_context.h

 // Copyright 2016 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_PUBLIC_CPP_BINDINGS_LIB_BINDINGS_SERIALIZATION_CONTEXT_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_BINDINGS_SERIALIZATION_CONTEXT_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <queue>
 #include <vector>
 
 #include "base/macros.h"
-#include "base/memory/ref_counted.h"
 #include "mojo/public/cpp/bindings/bindings_export.h"
 #include "mojo/public/cpp/bindings/lib/bindings_internal.h"
+#include "mojo/public/cpp/bindings/scoped_interface_endpoint_handle.h"
 #include "mojo/public/cpp/system/handle.h"
 
 namespace mojo {
-
-class AssociatedGroupController;
-
 namespace internal {
 
 // A container for handles during serialization/deserialization.
 class MOJO_CPP_BINDINGS_EXPORT SerializedHandleVector {
  public:
   SerializedHandleVector();
   ~SerializedHandleVector();
 
   size_t size() const { return handles_.size(); }
 
@@ skipping 16 matching lines @@
  private:
   // Handles are owned by this object.
   std::vector<mojo::Handle> handles_;
 
   DISALLOW_COPY_AND_ASSIGN(SerializedHandleVector);
 };
 
 // Context information for serialization/deserialization routines.
 struct MOJO_CPP_BINDINGS_EXPORT SerializationContext {
   SerializationContext();
-  explicit SerializationContext(
-      scoped_refptr<AssociatedGroupController> in_group_controller);
 
   ~SerializationContext();
 
-  // Used to serialize/deserialize associated interface pointers and requests.
-  scoped_refptr<AssociatedGroupController> group_controller;
-
   // Opaque context pointers returned by StringTraits::SetUpContext().
   std::unique_ptr<std::queue<void*>> custom_contexts;
 
   // Stashes handles encoded in a message by index.
   SerializedHandleVector handles;
+
+  // The number of ScopedInterfaceEndpointHandles that need to be serialized.
+  // It is calculated by PrepareToSerialize().
+  uint32_t associated_endpoint_count = 0;
+
+  // Stashes ScopedInterfaceEndpointHandles encoded in a message by index.
+  std::vector<ScopedInterfaceEndpointHandle> associated_endpoint_handles;
 };
 
 }  // namespace internal
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_BINDINGS_SERIALIZATION_CONTEXT_H_