Remove pp_ifdef from resource files in chrome/browser and chrome/renderer.

chrome/browser/resources/print_preview/print_preview.css

Index: chrome/browser/resources/print_preview/print_preview.css
diff --git a/chrome/browser/resources/print_preview/print_preview.css b/chrome/browser/resources/print_preview/print_preview.css
index 8335bf5fc81364b25678b8f9c5378088dfec25cd..a5f5d5aa9d7ffcf210e4b2515104fac020e75624 100644
--- a/chrome/browser/resources/print_preview/print_preview.css
+++ b/chrome/browser/resources/print_preview/print_preview.css
@@ -268,7 +268,7 @@ span.jumping-dots > span:nth-child(3) {
 
 /* TODO(estade): unfork this code. */
 #print-header .button-strip {
-<if expr="not pp_ifdef('chromeos') and not is_win">
+<if expr="not chromeos and not is_win">
   -webkit-box-direction: reverse;
 </if>
   -webkit-box-orient: horizontal;