Fix some clang warnings with -Wmissing-braces in base.

base/message_loop/message_pump_win.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/message_loop/message_pump_win.h"
 
 #include <limits>
 #include <math.h>
 
 #include "base/message_loop/message_loop.h"
@@ skipping 459 matching lines @@
     // (we think), so this will probably be recoverable.
     UMA_HISTOGRAM_ENUMERATION("Chrome.MessageLoopProblem",
                               MESSAGE_POST_ERROR,
                               MESSAGE_LOOP_PROBLEM_MAX);
   }
 }
 
 void MessagePumpForUI::SetWakeupTimer(int64 delay_ms) {
   // Set the timer for the delay passed in. The actual resolution of the
   // timer is dependent on whether timeBeginPeriod was called.
-  LARGE_INTEGER due_time = {0};
+  LARGE_INTEGER due_time = {};
   due_time.QuadPart = -delay_ms * 10000;
   BOOL timer_set = ::SetWaitableTimer(ui_worker_thread_timer_.Get(),
       &due_time, 0, NULL, NULL, FALSE);
   CHECK(timer_set);
 }
 
 void MessagePumpForUI::ScheduleWorkHelper() {
   // Set the flag which allows the UI worker thread to repost the timer to
   // process tasks which may not have been ready to run in the first iteration.
   ::InterlockedExchange(&force_fallback_timer_for_tasks_, 1);
@@ skipping 227 matching lines @@
 
 // static
 MessagePumpForIO::IOHandler* MessagePumpForIO::KeyToHandler(
     ULONG_PTR key,
     bool* has_valid_io_context) {
   *has_valid_io_context = ((key & 1) == 0);
   return reinterpret_cast<IOHandler*>(key & ~static_cast<ULONG_PTR>(1));
 }
 
 }  // namespace base