Fix a problem with DrawRectInt at the edges of a ChromeCanvas.

Fix a problem with DrawRectInt at the edges of a ChromeCanvas.

It seems there used to be an old bug in Skia, and we explicitly set a stroke
width of 1 instead of 0 to work around it.  Internally in Skia this goes down
a more complex path, creating a path from the rect, and then filling the path.
This was causing problems at the edges of the canvas, for example if you were
to DrawRectInt(0, 0, width - 1, height - 1).

Switch some SkRects to SkIRects.  Internally Skia will still convert them to scalars, but it makes our code a bit cleaner.

[Dean McNamee, 2009-04-07 11:03:20]

gnarlz man.

[sky, 2009-04-07 16:04:21]

LGTM