Support subpixel values for text-shadow and box-shadow

LayoutTests/animations/interpolation/resources/interpolation-test.js

Index: LayoutTests/animations/interpolation/resources/interpolation-test.js
diff --git a/LayoutTests/animations/interpolation/resources/interpolation-test.js b/LayoutTests/animations/interpolation/resources/interpolation-test.js
index c56ccfacbc58b57125cb958e07ddefd22804d221..8cab9e9020e681ffe17bc07ccc10d7b151f50c8e 100644
--- a/LayoutTests/animations/interpolation/resources/interpolation-test.js
+++ b/LayoutTests/animations/interpolation/resources/interpolation-test.js
@@ -194,9 +194,11 @@
 
   function normalizeValue(value) {
     return value.
-        // Round numbers to two decimal places.
+        // Round numbers to one decimal place. Our layout units are not exact

[dstockwell, 2013/11/27 23:49:31]

This shouldn't be necessary and isn't really appropriate. This is used in more
than the comparisons of just layout units.

Are the test results you are producing not stable?

[cbiesinger, 2013/12/18 02:09:12]

Reverted, see below.

+        // enough for any finer comparisons -- a difference of 1 LayoutUnit is
+        // 0.016 pixels.
         replace(/-?\d*\.\d+/g, function(n) {
-          return (parseFloat(n).toFixed(2)).
+          return (parseFloat(n).toFixed(1)).
               replace(/\.0*$/, '').
               replace(/^-0$/, '0');
         }).