Print Preview: Fix button reversal

Print button should be on the left on Windows and Chrome OS.

Bug: 880562
Change-Id: If4a0cec12e506846444f753361653b7407db99e7
Reviewed-on: https://chromium-review.googlesource.com/1205201Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Scott Chen <scottchen@chromium.org>
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#588745}

chrome/browser/resources/print_preview/new/header.html

@@ -74,11 +74,16 @@
         inner-h-t-m-l="[[summary_]]">
     </span>
     <div id="button-strip">
+<if expr="not chromeos and not is_win">
       <button class="cancel" on-click="onCancelClick_">$i18n{cancel}</button>
+</if>
       <button class="print default" on-click="onPrintClick_"
           disabled$="[[!printButtonEnabled_]]">
         [[getPrintButton_(destination.id)]]
       </button>
+<if expr="chromeos or is_win">
+      <button class="cancel" on-click="onCancelClick_">$i18n{cancel}</button>
+</if>
     </div>
   </template>
   <script src="header.js"></script>

chrome/browser/resources/print_preview/print_preview_resources.grd

@@ -165,7 +165,8 @@
                  type="chrome_html" />
       <structure name="IDR_PRINT_PREVIEW_NEW_HEADER_HTML"
                  file="new/header.html"
-                 type="chrome_html" />
+                 type="chrome_html"
+                 preprocess="true" />
       <structure name="IDR_PRINT_PREVIEW_NEW_HEADER_JS"
                  file="new/header.js"
                  type="chrome_html" />