Improve process launch handle sharing API.

base/metrics/field_trial.cc

 // 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.
 
 #include "base/metrics/field_trial.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/base_switches.h"
@@ skipping 810 matching lines @@
         command_line.GetSwitchValueASCII(disable_features_switch));
   }
 
   feature_list->InitializeFromSharedMemory(
       global_->field_trial_allocator_.get());
 }
 
 #if defined(OS_WIN)
 // static
 void FieldTrialList::AppendFieldTrialHandleIfNeeded(
-    HandlesToInheritVector* handles) {
+    std::vector<HANDLE>* handles) {
   if (!global_)
     return;
   if (kUseSharedMemoryForFieldTrials) {
     InstantiateFieldTrialAllocatorIfNeeded();
     if (global_->readonly_allocator_handle_.IsValid())
       handles->push_back(global_->readonly_allocator_handle_.GetHandle());
   }
 }
 #endif
 
@@ skipping 566 matching lines @@
     return;
   }
   AutoLock auto_lock(global_->lock_);
   CHECK(!global_->PreLockedFind(trial->trial_name())) << trial->trial_name();
   trial->AddRef();
   trial->SetTrialRegistered();
   global_->registered_[trial->trial_name()] = trial;
 }
 
 }  // namespace base