Fixes play seek when user sets loop after ended.

Source/core/html/HTMLMediaElement.h

Index: Source/core/html/HTMLMediaElement.h
diff --git a/Source/core/html/HTMLMediaElement.h b/Source/core/html/HTMLMediaElement.h
index 6f539a0bd30757c50c9e939d57f7547960ee2ceb..3bc0d8ae8e9ea86e31f6374ecd383bf794db4b08 100644
--- a/Source/core/html/HTMLMediaElement.h
+++ b/Source/core/html/HTMLMediaElement.h
@@ -411,10 +411,13 @@ private:
     void updateVolume();
     void updatePlayState();
     bool potentiallyPlaying() const;
-    bool endedPlayback() const;
     bool stoppedDueToErrors() const;
     bool couldPlayIfEnoughData() const;
 
+    enum class LoopFactor { Included, Ignored };

[fs, 2015/02/13 11:49:22]

The "Factor" suffix made me go "huh?". I think using non-class enums and named
the values "IncludeLoop" and "IgnoreLoop" or some such might've been less noisy.
Any other way to eliminate "Factor" would be fine by me though - LoopCondition?

[chcunningham, 2015/02/13 23:01:43]

Its like X-Factor :P But sure, LoopCondition it is. 

+    bool endedPlayback() const;
+    bool endedPlayback(LoopFactor) const;
+
     void setShouldDelayLoadEvent(bool);
     void invalidateCachedTime();
     void refreshCachedTime() const;