libchrome: Several upstreamable fixes from libchrome

base/message_loop/incoming_task_queue.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/incoming_task_queue.h"
 
 #include <limits>
 
 #include "base/location.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 15 matching lines @@
 
 // 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)
   // The Android UI message loop needs to get notified each time a task is
   // added
   // to the incoming queue.
   return type == MessageLoop::TYPE_UI || type == MessageLoop::TYPE_JAVA;
 #else
+  (void)type;  // Avoid an unused warning.
   return false;
 #endif
 }
 
 }  // namespace
 
 IncomingTaskQueue::IncomingTaskQueue(MessageLoop* message_loop)
     : high_res_task_count_(0),
       message_loop_(message_loop),
       next_sequence_num_(0),
@@ skipping 127 matching lines @@
   // After we've scheduled the message loop, we do not need to do so again
   // until we know it has processed all of the work in our queue and is
   // waiting for more work again. The message loop will always attempt to
   // reload from the incoming queue before waiting again so we clear this flag
   // in ReloadWorkQueue().
   message_loop_scheduled_ = true;
 }
 
 }  // namespace internal
 }  // namespace base