While Buffett abstained from voting against the pay proposal at Coca-Cola’s shareholder meeting last week, he began criticizing the plan after it passed. The Wall Street Journal reported yesterday that pressure from Buffett would probably prod Coca-Cola to revise the pay plan before it goes into effect next year. “No changes are being made to the plan at this time,” Petro Kacur, a spokesman for Atlanta-based Coca-Cola, said in an e-mailed statement.