PPAPI: Fix WebSocket Var ref leak receiving binary

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 55 matching lines @@
   // 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);
   // Same as above, but copy the contents of |data| in to the new array buffer.
   PP_Var MakeArrayBufferPPVar(uint32 size_in_bytes, const void* data);
 
+  // Create an ArrayBuffer and copy the contents of |data| in to it. The
+  // returned object has 0 reference count in the tracker, and like all
+  // RefCounted objects, has a 0 initial internal reference count. (You should
+  // usually immediately put this in a scoped_refptr).
+  ArrayBufferVar* MakeArrayBufferVar(uint32 size_in_bytes, const void* data);
+
   // 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.
   int GetRefCountForObject(const PP_Var& object);
@@ skipping 79 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_