Clean up a few more unused globals.

ui/gl/vsync_provider.cc

 // Copyright (c) 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 "ui/gl/vsync_provider.h"
 
 #include <math.h>
 
 #include "base/logging.h"
 #include "base/time/time.h"
 
-namespace {
-
+#if defined(OS_LINUX)
 // These constants define a reasonable range for a calculated refresh interval.
 // Calculating refreshes out of this range will be considered a fatal error.
 const int64 kMinVsyncIntervalUs = base::Time::kMicrosecondsPerSecond / 400;
 const int64 kMaxVsyncIntervalUs = base::Time::kMicrosecondsPerSecond / 10;
 
 // How much noise we'll tolerate between successive computed intervals before
 // we think the latest computed interval is invalid (noisey due to
 // monitor configuration change, moving a window between monitors, etc.).
 const double kRelativeIntervalDifferenceThreshold = 0.05;
-
-}  // namespace
+#endif
 
 namespace gfx {
 
 VSyncProvider::VSyncProvider() {
 }
 
 VSyncProvider::~VSyncProvider() {
 }
 
 SyncControlVSyncProvider::SyncControlVSyncProvider()
@@ skipping 117 matching lines @@
     }
   }
 
   last_timebase_ = timebase;
   last_media_stream_counter_ = media_stream_counter;
   callback.Run(timebase, last_good_interval_);
 #endif  // defined(OS_LINUX)
 }
 
 }  // namespace gfx