Mac Overlays: Add unittests for CALayerTree

content/common/gpu/ca_layer_tree_mac.h

 // Copyright 2016 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.
 
 #ifndef CONTENT_COMMON_GPU_CA_LAYER_TREE_MAC_H_
 #define CONTENT_COMMON_GPU_CA_LAYER_TREE_MAC_H_
 
 #include <IOSurface/IOSurface.h>
 #include <QuartzCore/QuartzCore.h>
 #include <deque>
 #include <vector>
 
 #include "base/mac/scoped_cftyperef.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
+#include "content/common/content_export.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gfx/transform.h"
 
 namespace content {
 
 // The CALayerTree will construct a hierarchy of CALayers from a linear list,
 // using the algorithm and structure referenced described in
 // https://docs.google.com/document/d/1DtSN9zzvCF44_FQPM7ie01UxGHagQ66zfF5L9HnigQY/edit?usp=sharing
-class CALayerTree {
+class CONTENT_EXPORT CALayerTree {
  public:
   CALayerTree();
 
   // This will remove all CALayers from this tree from their superlayer.
   ~CALayerTree();
 
   // Append the description of a new CALayer to the tree. This will not
   // create any new CALayers until CommitScheduledCALayers is called. This
   // cannot be called anymore after CommitScheduledCALayers has been called.
   bool ScheduleCALayer(bool is_clipped,
@@ skipping 145 matching lines @@
   float scale_factor_ = 1;
   bool has_committed_ = false;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CALayerTree);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_CA_LAYER_TREE_MAC_H_