compositor_unittests target is unimplmented on Mac

ui/base/animation/tween.cc

 // Copyright (c) 2011 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/base/animation/tween.h"
 
 #include <math.h>
 
 #if defined(OS_WIN)
 #include <float.h>
 #endif
 
 #include "base/logging.h"
-
-#if !defined(OS_MACOSX)
 #include "ui/gfx/interpolated_transform.h"
-#endif
 
 namespace ui {
 
 // static
 double Tween::CalculateValue(Tween::Type type, double state) {
   DCHECK_GE(state, 0);
   DCHECK_LE(state, 1);
 
   switch (type) {
     case EASE_IN:
@@ skipping 51 matching lines @@
                               const gfx::Rect& start_bounds,
                               const gfx::Rect& target_bounds) {
   return gfx::Rect(ValueBetween(value, start_bounds.x(), target_bounds.x()),
                    ValueBetween(value, start_bounds.y(), target_bounds.y()),
                    ValueBetween(value, start_bounds.width(),
                                 target_bounds.width()),
                    ValueBetween(value, start_bounds.height(),
                                 target_bounds.height()));
 }
 
-#if !defined(OS_MACOSX)
 // static
 Transform Tween::ValueBetween(double value,
                               const Transform& start_transform,
                               const Transform& end_transform) {
   if (value >= 1.0)
     return end_transform;
   if (value <= 0.0)
     return start_transform;
 
   Transform to_return;
@@ skipping 20 matching lines @@
         to_return.matrix().set(row, col,
             ValueBetween(value,
                          start_transform.matrix().get(row, col),
                          end_transform.matrix().get(row, col)));
       }
     }
   }
 
   return to_return;
 }
-#endif
 
 }  // namespace ui