Unit test for WebMediaPlayerMS

content/renderer/media/webmediaplayer_ms.h

Index: content/renderer/media/webmediaplayer_ms.h
diff --git a/content/renderer/media/webmediaplayer_ms.h b/content/renderer/media/webmediaplayer_ms.h
index d0d2fb365acc35a6665dc086c3131c9fa3693742..bfeaff49e13e538d9a2440b8738d2ccb4ef8722c 100644
--- a/content/renderer/media/webmediaplayer_ms.h
+++ b/content/renderer/media/webmediaplayer_ms.h
@@ -11,6 +11,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
+#include "content/common/content_export.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "media/blink/webmediaplayer_util.h"
 #include "media/renderers/gpu_video_accelerator_factories.h"
@@ -56,10 +57,10 @@ class RenderFrameObserver;
 //
 // blink::WebMediaPlayerClient
 //   WebKit client of this media player object.
-class WebMediaPlayerMS
-    : public blink::WebMediaPlayer,
-      public base::SupportsWeakPtr<WebMediaPlayerMS>,
-      public RenderFrameObserver {
+class CONTENT_EXPORT WebMediaPlayerMS
+    : public NON_EXPORTED_BASE(blink::WebMediaPlayer),
+      public NON_EXPORTED_BASE(base::SupportsWeakPtr<WebMediaPlayerMS>),
+      public NON_EXPORTED_BASE(RenderFrameObserver) {
  public:
   // Construct a WebMediaPlayerMS with reference to the client, and
   // a MediaStreamClient which provides VideoFrameProvider.
@@ -147,6 +148,8 @@ class WebMediaPlayerMS
       bool flip_y) override;
 
  private:
+  friend class WebMediaPlayerMSTest;
+
   // The callback for VideoFrameProvider to signal a new frame is available.
   void OnFrameAvailable(const scoped_refptr<media::VideoFrame>& frame);
   // Need repaint due to state change.