PPAPI: Proxy VarArrayBuffer for out-of-process.

ppapi/shared_impl/var_tracker.h

 // Copyright (c) 2012 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 PPAPI_SHARED_IMPL_VAR_TRACKER_H_
 #define PPAPI_SHARED_IMPL_VAR_TRACKER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 43 matching lines @@
   // Decreases the given Var ID's refcount, returning true on success, false if
   // the ID is invalid or if the refcount was already 0. The PP_Var version
   // returns true and does nothing for non-refcounted type vars. The var will
   // be deleted if there are no more refs to it.
   bool ReleaseVar(int32 var_id);
   bool ReleaseVar(const PP_Var& var);
 
   // Create a new array buffer of size |size_in_bytes|. Return a PP_Var that
   // that references it and has an initial reference-count of 1.
   PP_Var MakeArrayBufferPPVar(uint32 size_in_bytes);
+  PP_Var MakeArrayBufferPPVar(uint32 size_in_bytes, const void* data);

[brettw, 2012/02/09 19:23:22]

Can you provide documentation for this? I at first thought it referenced data,
but instead it copies.

 
   // Return a vector containing all PP_Vars that are in the tracker. This is
   // to help implement PPB_Testing_Dev.GetLiveVars and should generally not be
   // used in production code. The PP_Vars are returned in no particular order,
   // and their reference counts are unaffected.
   std::vector<PP_Var> GetLiveVars();
 
   // Retrieves the internal reference counts for testing. Returns 0 if we
   // know about the object but the corresponding value is 0, or -1 if the
   // given object ID isn't in our map.
@@ skipping 77 matching lines @@
   // implemented by the Host and Plugin tracker separately, so that it can be
   // a real WebKit ArrayBuffer on the host side.
   virtual ArrayBufferVar* CreateArrayBuffer(uint32 size_in_bytes) = 0;
 
   DISALLOW_COPY_AND_ASSIGN(VarTracker);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_VAR_TRACKER_H_