Add GetLiveVars to PPB_Testing_Dev. Fix leaks it uncovered.

ppapi/shared_impl/var_tracker.h

 // Copyright (c) 2011 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"
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "ppapi/c/pp_module.h"
 #include "ppapi/c/pp_var.h"
 #include "ppapi/shared_impl/ppapi_shared_export.h"
 
 namespace ppapi {
 
 class ArrayBufferVar;
@@ skipping 35 matching lines @@
   // 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);
 
+  // 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();
+
  protected:
   struct VarInfo {
     VarInfo();
     VarInfo(Var* v, int input_ref_count);
 
     scoped_refptr<Var> var;
 
     // Explicit reference count. This value is affected by the renderer calling
     // AddRef and Release. A nonzero value here is represented by a single
     // reference in the host on our behalf (this reduces IPC traffic).
@@ skipping 64 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_