This tests that page zoom and image auto-sizing interact well together. This test requires testRunner to run. To test manually, open this image in a browser window, resize the window to 200px tall and zoom out 6 times. The image should get smaller at each step.

Size at zoom level0 : 199 x 150
Size at zoom level1 : 199 x 150
Size at zoom level2 : 200 x 149
Size at zoom level3 : 199 x 149
Size at zoom level4 : 199 x 149
Size at zoom level5 : 197 x 149

