Enable WebVTT regions for runtime testing, updated tests and minor fixes

Source/core/loader/TextTrackLoader.h

Index: Source/core/loader/TextTrackLoader.h
diff --git a/Source/core/loader/TextTrackLoader.h b/Source/core/loader/TextTrackLoader.h
index 4eb68a81aa60693534517251c6c329f258a81c60..6f915b2d40aca7f933f4cc826e6979078bd92f47 100644
--- a/Source/core/loader/TextTrackLoader.h
+++ b/Source/core/loader/TextTrackLoader.h
@@ -47,9 +47,7 @@ public:
     virtual void newCuesAvailable(TextTrackLoader*) = 0;
     virtual void cueLoadingStarted(TextTrackLoader*) = 0;
     virtual void cueLoadingCompleted(TextTrackLoader*, bool loadingFailed) = 0;
-#if ENABLE(WEBVTT_REGIONS)
     virtual void newRegionsAvailable(TextTrackLoader*) = 0;
-#endif
 };
 
 class TextTrackLoader : public ResourceClient, private WebVTTParserClient {
@@ -69,9 +67,7 @@ public:
     State loadState() { return m_state; }
 
     void getNewCues(Vector<RefPtr<TextTrackCue> >& outputCues);
-#if ENABLE(WEBVTT_REGIONS)
     void getNewRegions(Vector<RefPtr<TextTrackRegion> >& outputRegions);
-#endif
 private:
 
     // ResourceClient
@@ -80,9 +76,7 @@ private:
 
     // WebVTTParserClient
     virtual void newCuesParsed();
-#if ENABLE(WEBVTT_REGIONS)
     virtual void newRegionsParsed();
-#endif
     virtual void fileFailedToParse();
 
     TextTrackLoader(TextTrackLoaderClient*, ScriptExecutionContext*);