This turned out not just to be happening it Chrome, but it was more noticeable in that browser. As I posted above, here is the solution:
After reading a solution for a slightly different Chrome/svg problem I figured out the answer. Posting back here in case someone else runs across this issue. I created my SVG file in Illustrator. Apparently my artboard/image size was not in precise pixels. I discovered this by opening my SVG file in a text editor and looking at the top of the file I saw this :
width="229.9999px" height="147.4256px"
I opened the svg file in illustrator and made sure that the dimensions were exactly even pixels, then double checked again in the text file. Corrected dimensions were:
width="230px height="148px"
For some reason simply editing the values in the text file did not work for me, but then again it was faster to just fix in Illustrator than figure out how to edit the svg text file correctly. At any rate, now I do not have a gap in my tiles. Hope that helps someone else if they are having this problem.
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