Add GetLiveVars to PPB_Testing_Dev. Fix leaks it uncovered.

ppapi/shared_impl/var_tracker.cc

 // 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.
 
 #include "ppapi/shared_impl/var_tracker.h"
 
 #include <limits>
 
 #include "base/logging.h"
 #include "ppapi/shared_impl/id_assignment.h"
@@ skipping 131 matching lines @@
   return type >= PP_VARTYPE_STRING;
 }
 
 PP_Var VarTracker::MakeArrayBufferPPVar(uint32 size_in_bytes) {
   scoped_refptr<ArrayBufferVar> array_buffer(CreateArrayBuffer(size_in_bytes));
   if (!array_buffer)
     return PP_MakeNull();
   return array_buffer->GetPPVar();
 }
 
+std::vector<PP_Var> VarTracker::GetLiveVars() {
+  std::vector<PP_Var> var_vector;
+  var_vector.reserve(live_vars_.size());
+  for (VarMap::const_iterator iter = live_vars_.begin();
+       iter != live_vars_.end();
+       ++iter) {
+    var_vector.push_back(iter->second.var->GetPPVar());
+  }
+  return var_vector;
+}
+
 void VarTracker::TrackedObjectGettingOneRef(VarMap::const_iterator obj) {
   // Anybody using tracked objects should override this.
   NOTREACHED();
 }
 
 void VarTracker::ObjectGettingZeroRef(VarMap::iterator iter) {
   DeleteObjectInfoIfNecessary(iter);
 }
 
 bool VarTracker::DeleteObjectInfoIfNecessary(VarMap::iterator iter) {
   if (iter->second.ref_count != 0 ||
       iter->second.track_with_no_reference_count != 0)
     return false;  // Object still alive.
   iter->second.var->ResetVarID();
   live_vars_.erase(iter);
   return true;
 }
 
 }  // namespace ppapi