1 files changed, 8 insertions, 5 deletions
diff --git a/Source/WebCore/platform/graphics/mac/MediaPlayerPrivateQTKit.mm b/Source/WebCore/platform/graphics/mac/MediaPlayerPrivateQTKit.mm
index 98599e96b..29249aa78 100644
--- a/Source/WebCore/platform/graphics/mac/MediaPlayerPrivateQTKit.mm
+++ b/Source/WebCore/platform/graphics/mac/MediaPlayerPrivateQTKit.mm
@@ -214,6 +214,7 @@ MediaPlayerPrivateQTKit::MediaPlayerPrivateQTKit(MediaPlayer* player)
     , m_videoFrameHasDrawn(false)
     , m_isAllowedToRender(false)
     , m_privateBrowsing(false)
+    , m_maxTimeLoadedAtLastDidLoadingProgress(0)
 #if DRAW_FRAME_RATE
     , m_frameCountWhilePlaying(0)
     , m_timeStartedPlaying(0)
@@ -945,12 +946,14 @@ float MediaPlayerPrivateQTKit::maxTimeLoaded() const
     return wkQTMovieMaxTimeLoaded(m_qtMovie.get()); 
 }
 
-unsigned MediaPlayerPrivateQTKit::bytesLoaded() const
+bool MediaPlayerPrivateQTKit::didLoadingProgress() const
 {
-    float dur = duration();
-    if (!dur)
-        return 0;
-    return totalBytes() * maxTimeLoaded() / dur;
+    if (!duration() || !totalBytes())
+        return false;
+    float currentMaxTimeLoaded = maxTimeLoaded();
+    bool didLoadingProgress = currentMaxTimeLoaded != m_maxTimeLoadedAtLastDidLoadingProgress;
+    m_maxTimeLoadedAtLastDidLoadingProgress = currentMaxTimeLoaded;
+    return didLoadingProgress;
 }
 
 unsigned MediaPlayerPrivateQTKit::totalBytes() const