Celebregion

      Whitney Houston  was a chronic cocaine user who had the drug in her system when she drowned in a hotel bathtub, coroner's officials said Thursday after releasing autopsy findings that also noted heart disease contributed to her death.   The disclosure ended weeks of speculation about what killed the Grammy-winning singer on Feb. 11 on the eve of the Grammy Awards . Houston was found submerged in the bathtub of her room at the Beverly Hilton Hotel, and her death was ruled accidental. Several bottles of prescription medications were found in her hotel room, but coroner's officials said there weren't excessive quantities. " We are saddened to learn of the toxicology results, although we are glad to now have closure, " Patricia Houston, the singer's sister-in-law and manager, wrote in a statement to The Associated Press.    Beverly Hills police said in a statement there was no evidence of wrongdoing in connection with Houston's death.   ...