Starting on Tuesday, September 1st, Google will start automatically pausing Adobe Flash in its Chrome browsers, reasoning that it will save users’ battery life and improve performance in their electronic devices. This will affect any Flash content that is not central to the webpage that you are viewing. You can view their statement here.
In its place they are urging designers and developers to use HTML5, CSS3 and other technologies to create replacements for the Flash functionality. Google has tools to help create AdWords advertising to compatible formats, or galleries and tools to help you create content in HTML5.