ChromeExtensionToHookWebSocket

1. Chrome extension to hook the websocket which transfer the h5 canvas data.
2. Convert the base64 data to picture and then download it.
3. Main code is in inject.js

Reference

1. https://github.com/skepticfx/wshook
2. https://developer.chrome.com/extensions
3. http://www.cnblogs.com/ligerleng/p/gmail_assist_0.html