Print Preview: Adding UI for margin settings.

chrome/browser/resources/print_preview/print_preview_utils.js

Index: chrome/browser/resources/print_preview/print_preview_utils.js
diff --git a/chrome/browser/resources/print_preview/print_preview_utils.js b/chrome/browser/resources/print_preview/print_preview_utils.js
index 594769e96d7b23a299e04a1d0ebdd10f9b4f0adf..90ecd1603accb153b7e25bd4c5b976d097cdc0e0 100644
--- a/chrome/browser/resources/print_preview/print_preview_utils.js
+++ b/chrome/browser/resources/print_preview/print_preview_utils.js
@@ -203,3 +203,24 @@ function randomInteger(endPointA, endPointB) {
   to = Math.max(endPointA, endPointB);
   return Math.floor(Math.random() * (to - from + 1) + from);
 }
+
+// Number of points per inch.
+POINTS_PER_INCH = 72;
+
+/**
+ * Converts |value| from inches to points.
+ * @param {number} value The number in inches.
+ * @return {number} |value| in points.
+ */
+function convertInchesToPoints(value) {
+  return value * POINTS_PER_INCH;
+}
+
+/**
+ * Converts |value| from points to inches.
+ * @param {number} value The number in points.
+ * @return {number} |value| in inches.
+ */
+function convertPointsToInches(value) {
+  return value / POINTS_PER_INCH;
+}