Add unittests for CursorRendererMac

content/browser/media/capture/cursor_renderer_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_BROWSER_MEDIA_CAPTURE_CURSOR_RENDERER_MAC_H_
 #define CONTENT_BROWSER_MEDIA_CAPTURE_CURSOR_RENDERER_MAC_H_
 
 #import <AppKit/AppKit.h>
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 26 matching lines @@
   ~CursorRendererMac() final;
 
   // CursorRender implementation.
   bool IsCapturedViewActive() final;
   gfx::Size GetCapturedViewSize() final;
   gfx::Point GetCursorPositionInView() final;
   gfx::NativeCursor GetLastKnownCursor() final;
   SkBitmap GetLastKnownCursorImage(gfx::Point* hot_point) final;
 
  private:
+  friend class CursorRendererMacTest;
+
   // Called for mouse activity events.
   void OnMouseEvent();
 
   NSView* const view_;
 
   base::scoped_nsobject<CursorRendererMouseTracker> mouse_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(CursorRendererMac);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_CAPTURE_CURSOR_RENDERER_MAC_H_