OTTAWA — Top executives from Canada's major grocery chains have agreed to work with the federal government on stabilizing prices, Industry Minister François-Philippe Champagne said on Monday, but few details have been divulged about how that will be achieved. Champagne and Finance Minister Chrystia Freeland met with executives from Loblaw, Metro, Empire, Walmart and Costco on Monday morning. "They have agreed to support the government of Canada in our efforts to stabilize food prices in Canada,"