We are seeing a memory leak in our WebGL build - are there any known memory links in Unity 5.2 when running WebGL? If we just start our game (in Firefox on Windows) and let it sit as the active tab we eventually get the “The browser could not allocate enough memory for the WebGL content. If you are the developer of this content, try allocating less memory to your WebGL build in the WebGL player settings.” message.
Two things you may want to try:
- Use a newer Unity version.
- Profile your build.