Fix "defined but not used" warning in base/message_loop/message_loop.cc

base/message_loop/message_loop.cc

 // Copyright 2013 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/message_loop/message_loop.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 32 matching lines @@
 namespace {
 
 // A lazily created thread local storage for quick access to a thread's message
 // loop, if one exists.  This should be safe and free of static constructors.
 LazyInstance<base::ThreadLocalPointer<MessageLoop> >::Leaky lazy_tls_ptr =
     LAZY_INSTANCE_INITIALIZER;
 
 // Logical events for Histogram profiling. Run with -message-loop-histogrammer
 // to get an accounting of messages and actions taken on each thread.
 const int kTaskRunEvent = 0x1;
+#if !defined(OS_NACL)
 const int kTimerEvent = 0x2;
 
 // Provide range of message IDs for use in histogramming and debug display.
 const int kLeastNonZeroMessageId = 1;
 const int kMaxMessageId = 1099;
 const int kNumberOfDistinctMessagesDisplayed = 1100;
 
 // Provide a macro that takes an expression (such as a constant, or macro
 // constant) and creates a pair to initalize an array of pairs.  In this case,
 // our pair consists of the expressions value, and the "stringized" version
@@ skipping 13 matching lines @@
 const LinearHistogram::DescriptionPair event_descriptions_[] = {
   // Provide some pretty print capability in our histogram for our internal
   // messages.
 
   // A few events we handle (kindred to messages), and used to profile actions.
   VALUE_TO_NUMBER_AND_NAME(kTaskRunEvent)
   VALUE_TO_NUMBER_AND_NAME(kTimerEvent)
 
   {-1, NULL}  // The list must be null terminated, per API to histogram.
 };
+#endif  // !defined(OS_NACL)
 
 bool enable_histogrammer_ = false;
 
 MessageLoop::MessagePumpFactory* message_pump_for_ui_factory_ = NULL;
 
 // Returns true if MessagePump::ScheduleWork() must be called one
 // time for every task that is added to the MessageLoop incoming queue.
 bool AlwaysNotifyPump(MessageLoop::Type type) {
 #if defined(OS_ANDROID)
   return type == MessageLoop::TYPE_UI || type == MessageLoop::TYPE_JAVA;
@@ skipping 622 matching lines @@
       fd,
       persistent,
       mode,
       controller,
       delegate);
 }
 
 #endif
 
 }  // namespace base